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Ultra Control Valves | Total Valve Solutions
Ultra Control Valves | Total Valve Solutions
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    • Control ValvesControl valves are used to control conditions such as flow, pressure, temperature and liquid level by fully or partially opening or closing in response to signals received from controllers. Control valves can also work with the line media and controlled by Pilots. These types of valves are also known as Self Actuated Automatic Control Valves. The Pilots will respond to changes of pressure or flow and will open/close the valve. These valves do not require an external power source, meaning that the fluid pressure is enough to open and close the valve. Self Actuated Automatic control valves include: pressure reducing valves, flow control valves, back-pressure sustaining valves, level control valves, relief valves and solenoid valves, or a combination of these functions. An altitude valve controls the level of a tank. The altitude valve will remain open while the tank is not full and it will close when the tanks reaches its maximum level. The opening and closing of the valve requires no external power source (electric, pneumatic, or man power), it is done automatically, hence the name, automatic control valve. If you would like more information on automatic control valves or want to know which kind of valve best suits…
      • Pressure Reducing Valves
      • Level Control Valves
      • Pressure Sustaining Valves
      • Flow Control Valves
      • Relief Valves
      • Ring Needle Valves
      • Safety Shutdown Valves
    • Air Release ValvesAir release valves are used to release the air from pockets that are formed in pipelines. Due to the basic nature of fluid phases, air pockets will form at the high points of a fully pressurized pipeline. Air release valves are necessary for pipeline efficiency and to protect against water hammer. Air in the water lines can cause many problems, the main one speeding up the process of corrosion (Causing high costs in the maintenance of the pipeline). A reduction of flow is also created by air that has been trapped at the bends, tees and other fittings in the system. Flow can even stop due to an “air lock” in the water line. This often happens in chemical feed lines at a water plant. If air release valves are not installed, uncontrolled air releases may occur, causing pressure surges in the system, which can increase the chances of hazards from cavitation. Alternatively, if air is left in a water main, it will eventually cause customers’ meters to read improperly, thus charging the customer for air that is going through the meter, and not water. The “universal” type of Air release valves are designed to allow the automatic discharge of…
    • Butterfly ValvesButterfly valves are used for isolating or regulating flow. The closing mechanism takes the form of a disk, situated in the valve body itself. Operation is similar to that of a ball valve, which allows for a quick shut off. Butterfly valves, however, are generally favored because they are lower in cost to other valve designs as well as being lighter in weight, meaning less support for installation is required. The disc is positioned in the center of the body, passing through the disc is a shaft connected to an actuator on the outside of the valve. This actuator could be a Lever, Gearbox, Electric, Pneumatic or Hydraulic actuator. Unlike a ball valve, the disc is always present within the flow, therefore a pressure drop is always induced in the flow, regardless of valve position. There are different kinds of butterfly valves, each adapted for different pressures and different usage. The rubberlined butterfly valve, which uses the flexibility of rubber, has the lowest pressure rating, and is the most commonly used for many low pressure applications. The Double Eccentric butterfly valve, used in slightly higher-pressure and larger pipe systems, features an offset in the way the disc is positioned, which…
      • Teflon Lined Butterfly Valves
      • Rubber Lined Butterfly Valves
      • Triple Eccentric Butterfly Valves
      • Double Eccentric Butterfly Valves
    • Check ValvesA check valve or one-way valve is a valve that allows fluid (liquid or gas) to flow through it in only one direction. Check valve designs have evolved drastically over the last 20 years, and the aim of designers has revolved around increasing the speed of closure under its own power. In the case where pump control valves failure mode is not enough (Or no failure mode at all), a fast acting check valve can provide the solution. Different designs are available, listed below. If you need more information about check valves or want to know specifically what solutions you require, get in touch through our contact page.
      • Ball Check Valves
      • Swing Check Valves
      • Nozzle Check Valves
      • Tilting Disk Check Valves
      • Silent Check Valves
    • Gate ValvesThe gate valve, alternatively known as a sluice valve, is a valve that opens by lifting a round or rectangular gate/wedge out of the path of the fluid. The distinct feature of a gate valve is that the sealing surfaces between the gate and seats are planar. The gate faces can form a wedge shape or they can be parallel. Gate valves are primarily used to permit or prevent the flow of liquids, but typical gate valves shouldn’t be used for regulating flow, unless they are specifically designed for that purpose. For very viscous fluids, or with abrasive particles and properties a specialty valve known as a knife valve is used and which can cut through these particles. On opening the gate valve, the flow path is enlarged in a highly nonlinear manner with respect to percent of opening. This means that flow rate does not change evenly with stem travel. Also, a partially open gate disk tends to vibrate from the fluid flow. Most of the flow change occurs near shutoff with a relatively high fluid velocity causing disk and seat wear and eventual leakage if used to regulate flow. Typical gate valves are designed to be fully opened…
      • Knife Gate Valves
      • Wedge Gate Valves
      • RSV Gate Valves
    • Ball ValvesA ball valve is a valve with a specifically designed spherical disc, the part of the valve which controls the flow through it. The sphere has a hole, or port, through the middle so that when the port is in line with both ends of the valve, flow will occur. When the valve is closed, the hole is perpendicular to the ends of the valve, and flow is blocked. The handle or lever will be inline with the port position letting you examine the valve’s position. The ball valve, along with the butterfly valve, are part of the family of quarter turn valves. Ball valves are durable and usually work to achieve perfect shutoff. They are therefore an excellent choice for shutoff applications (and are often preferred to gate valves for this purpose). They do not offer the fine control that may be necessary in throttling applications but are sometimes used for this purpose. Listed below are the different types of ball valves that we specialize in. If you would like to know more or want to know which one suits your system specifically, get in touch through our contact page.
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  • Home
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    • Control ValvesControl valves are used to control conditions such as flow, pressure, temperature and liquid level by fully or partially opening or closing in response to signals received from controllers. Control valves can also work with the line media and controlled by Pilots. These types of valves are also known as Self Actuated Automatic Control Valves. The Pilots will respond to changes of pressure or flow and will open/close the valve. These valves do not require an external power source, meaning that the fluid pressure is enough to open and close the valve. Self Actuated Automatic control valves include: pressure reducing valves, flow control valves, back-pressure sustaining valves, level control valves, relief valves and solenoid valves, or a combination of these functions. An altitude valve controls the level of a tank. The altitude valve will remain open while the tank is not full and it will close when the tanks reaches its maximum level. The opening and closing of the valve requires no external power source (electric, pneumatic, or man power), it is done automatically, hence the name, automatic control valve. If you would like more information on automatic control valves or want to know which kind of valve best suits…
      • Pressure Reducing Valves
      • Level Control Valves
      • Pressure Sustaining Valves
      • Flow Control Valves
      • Relief Valves
      • Ring Needle Valves
      • Safety Shutdown Valves
    • Air Release ValvesAir release valves are used to release the air from pockets that are formed in pipelines. Due to the basic nature of fluid phases, air pockets will form at the high points of a fully pressurized pipeline. Air release valves are necessary for pipeline efficiency and to protect against water hammer. Air in the water lines can cause many problems, the main one speeding up the process of corrosion (Causing high costs in the maintenance of the pipeline). A reduction of flow is also created by air that has been trapped at the bends, tees and other fittings in the system. Flow can even stop due to an “air lock” in the water line. This often happens in chemical feed lines at a water plant. If air release valves are not installed, uncontrolled air releases may occur, causing pressure surges in the system, which can increase the chances of hazards from cavitation. Alternatively, if air is left in a water main, it will eventually cause customers’ meters to read improperly, thus charging the customer for air that is going through the meter, and not water. The “universal” type of Air release valves are designed to allow the automatic discharge of…
    • Butterfly ValvesButterfly valves are used for isolating or regulating flow. The closing mechanism takes the form of a disk, situated in the valve body itself. Operation is similar to that of a ball valve, which allows for a quick shut off. Butterfly valves, however, are generally favored because they are lower in cost to other valve designs as well as being lighter in weight, meaning less support for installation is required. The disc is positioned in the center of the body, passing through the disc is a shaft connected to an actuator on the outside of the valve. This actuator could be a Lever, Gearbox, Electric, Pneumatic or Hydraulic actuator. Unlike a ball valve, the disc is always present within the flow, therefore a pressure drop is always induced in the flow, regardless of valve position. There are different kinds of butterfly valves, each adapted for different pressures and different usage. The rubberlined butterfly valve, which uses the flexibility of rubber, has the lowest pressure rating, and is the most commonly used for many low pressure applications. The Double Eccentric butterfly valve, used in slightly higher-pressure and larger pipe systems, features an offset in the way the disc is positioned, which…
      • Teflon Lined Butterfly Valves
      • Rubber Lined Butterfly Valves
      • Triple Eccentric Butterfly Valves
      • Double Eccentric Butterfly Valves
    • Check ValvesA check valve or one-way valve is a valve that allows fluid (liquid or gas) to flow through it in only one direction. Check valve designs have evolved drastically over the last 20 years, and the aim of designers has revolved around increasing the speed of closure under its own power. In the case where pump control valves failure mode is not enough (Or no failure mode at all), a fast acting check valve can provide the solution. Different designs are available, listed below. If you need more information about check valves or want to know specifically what solutions you require, get in touch through our contact page.
      • Ball Check Valves
      • Swing Check Valves
      • Nozzle Check Valves
      • Tilting Disk Check Valves
      • Silent Check Valves
    • Gate ValvesThe gate valve, alternatively known as a sluice valve, is a valve that opens by lifting a round or rectangular gate/wedge out of the path of the fluid. The distinct feature of a gate valve is that the sealing surfaces between the gate and seats are planar. The gate faces can form a wedge shape or they can be parallel. Gate valves are primarily used to permit or prevent the flow of liquids, but typical gate valves shouldn’t be used for regulating flow, unless they are specifically designed for that purpose. For very viscous fluids, or with abrasive particles and properties a specialty valve known as a knife valve is used and which can cut through these particles. On opening the gate valve, the flow path is enlarged in a highly nonlinear manner with respect to percent of opening. This means that flow rate does not change evenly with stem travel. Also, a partially open gate disk tends to vibrate from the fluid flow. Most of the flow change occurs near shutoff with a relatively high fluid velocity causing disk and seat wear and eventual leakage if used to regulate flow. Typical gate valves are designed to be fully opened…
      • Knife Gate Valves
      • Wedge Gate Valves
      • RSV Gate Valves
    • Ball ValvesA ball valve is a valve with a specifically designed spherical disc, the part of the valve which controls the flow through it. The sphere has a hole, or port, through the middle so that when the port is in line with both ends of the valve, flow will occur. When the valve is closed, the hole is perpendicular to the ends of the valve, and flow is blocked. The handle or lever will be inline with the port position letting you examine the valve’s position. The ball valve, along with the butterfly valve, are part of the family of quarter turn valves. Ball valves are durable and usually work to achieve perfect shutoff. They are therefore an excellent choice for shutoff applications (and are often preferred to gate valves for this purpose). They do not offer the fine control that may be necessary in throttling applications but are sometimes used for this purpose. Listed below are the different types of ball valves that we specialize in. If you would like to know more or want to know which one suits your system specifically, get in touch through our contact page.
  • Pete’s Valves & Hydraulics
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  • Contact
    • Cape Town
    • Durban
    • Johannesburg

Jeremy Seven’s Blog

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The difference between RSV Gate valves and Wedge Gate valves.

Wedge gate valves (a.k.a gate valves) have a metal wedge which is forced against metal seats…

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Making electricity from water.

Most people imagine massive dams with long expensive approval processes when if they think about generating…

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Reservoir level control applications

One of the most common applications for self-actuated control valves is reservoir level control. At first…

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Best practice for scour valve applications.

A pipeline needs one or more scour valves so it can be drained – usually for…

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Water Savings in Domestic Uses

South Africa and other countries on the African continent are running out of water! The volume…

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Control valves for Pressure Management

Pressure management has become a crucial tool to reduce water losses in pipe networks. It brings…

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Ratio reducing valves in the water industry

Say “pressure reducing valve” to someone in the water industry and they’ll assume you’re referring to…

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Modern Solutions for Level Control Systems on Reservoirs

Both pressure and flow velocity must be considered when designing reservoir level control systems. Pressure considerations…

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Diaphragm valves for water level control

Standard pilot-operated globe control valves are often specified for level control. But, they are not suitable…

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​How ARI designs air-valves for the lowest possible total cost of ownership.

We have a professional responsibility to consider the total cost of ownership of equipment we specify.…

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Selection criteria for water control valves

For most engineers the criteria for selecting control valves is confusing.  Usually they end up specifying…

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Combined Surge Protection for a 4-Stage Pumping Station System in the North of Mexico

The following article was written by Alan Sunudo of A.R.I. Flow Mexico and republished here with…

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The importance of air valves that don’t leak.

Air valves are vital in pipelines and pump stations. They allow air to escape from pipelines…

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Some considerations in check valve selection

Check valves on pump installations. Check valves are generally installed on pump delivery manifolds to prevent…

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CPD: Water hammer course

I have developed a course on water hammer. The course is accredited by ECSA (The Engineering…

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Safe Pressure Reducing Stations

A break pressure tank or reservoir is often used when the topography causes pipeline pressure to…

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Water loss savings: A new approach.

Networks leak. Reducing pressure during periods of low demand has long been a strategy to reduce…

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How we’re using valves to save Cape Town.

You probably know that Cape Town is running out of water. Reducing water loss is an…

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How air pockets in wastewater systems lead to corrosion and broken pipes.

Recent research has shown that air pockets cause extensive damage and hindrance. They reduce flow capacity…

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Centrifugal pump protection using flow controllers

A correctly-sized flow controller close to the pump discharge provides tamper-resistant protection for centrifugal pumps. Running…

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Pressure reducing systems for housing complexes

Housing complexes need pressure reducing valves for several reasons: Higher supply pressure (from municipalities and waterboards)…

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New Developments in the Air Valve Evolution

Air vales have received a lot of attention because they play such a crucial role in…

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KITE ( KZN Industrial Technology Expo) in Durban 26-28 July

We’ll be exhibiting and talking about new developments in water loss prevention and water saving at…

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Pressure reducing valves for residential complexes

Water pressure from the municipal mains is too high in most residential complexes. Taps, geysers etc…

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When to use butterfly valves instead of gate valves.

Butterfly valve are chosen more often recently for the following reasons: Cheaper than gate valves. Easy…

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Using air-valves for surge suppression

Did you know that a 3-stage air valve can be used for surge suppression instead of…

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The challenges of reticulating water in high-rise buildings.

Many suburban areas are being rezoned as high-density areas and it is expected that the number…

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New Phase in the growth of A.R.I. Air valves in South Africa

A.R.I. has been in South Africa for approximately 20 years, and has shown steady growth over…

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Air valves for Sewage and Slurry Pipelines and Pump Stations

Air valves for the water industry are commonly the focal product for engineering, client and valve…

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Automatic Diaphragm Level Control Valves

Self actuated pilot operated control valves are in use worldwide and have become the natural choice…

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The effect of valve closure speed on surge pressures

Control valves play a major role in controlling surge (water-hammer) pressures in most pumping and pipeline…

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The Art of Specifying in the Valve Industry

Like most industries, marketing experts try to distinguish their products from those of their competitors, by…

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Simplified control options for irrigation systems

Traditional irrigation systems use a multitude of pilot operated, self actuated, control valves for in-field pressure…

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Simple Water Loss Saving Techniques and Equipment

Pressure management has, for many years, been considered a “quick fix”, and “quick return on investment”…

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Water Distribution in High Rise Buildings

A better Solution for Water reticulation in High Rise Buildings.Water is often supplied to high rise…

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Air valves with ball floats

Most of the original automatic air valves were based on having hollow balls as the most…

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Pump Control Valves for Borehole Applications

Traditional pump control valves are used for the following reasons: Soft start-up of the pump –…

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Control valves for Pressure Management

Pressure management has become a very important element in the fight to reduce unaccounted-for water losses…

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Status of the air valve market in South Africa

Air valves have always played a big role in the South African Water Industry, as Academics…

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Specifying modern air valves

When Vent-O-Mat air valves first came on the market in South Africa, more than 20 years…

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ARI starts local manufacture

ARI starts local manufacture

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Ratio reducing valves

Ratio Reducing Valves … The Next Evolution in Pressure Reducing Valves

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A.R.I. Israel English Seminar February 2015

A.R.I. Israel English Seminar February 2015 invite.

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Innovative Control and Water Savings using the Maric Flow Controller

Maric Flow Controllers have been discovered by the Mining Industry as a very simple control valve…

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Technical comparison between 3 major Water Control valve styles used in South Africa and Worldwide

Technical comparison between 3 major Water Control valve styles used in South Africa and Worldwide The…

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Pressure Reducing Stations for Deep Mining

Pressure reducing stations have become the norm for the deep mining industry. There are many different…

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New Technology in Air Valve design

Good hydraulic integrity in any pipeline is essential. The continual focus on development in the design…

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Modern Designs of Large Bore Pump Stations

Pump Station designs have evolved over the years. This is due to new designs of valves…

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Surge Tank vs Air Valves in Water Hammer reduction

Surge tanks are one of the oldest of surge alleviation methods. In the past they were…

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The results of water hammer

Many papers have been written about the results of water hammer damage to pipelines and pumping…

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Choosing the right valve for large bore sewage systems

Gate valves and knife gate valves are probably the most common styles used in sewage systems.…

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The importance of the small Automatic orifice in Air valves

Most modern combination air valves have at least two orifices, which serve three functions as follows:…

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Some considerations in sizing Pressure Reducing valves for water pipelines

Self actuated Pilot Operated Water Control Valves are very flexible in that they can be used…

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The use of Maric Flow Controllers on Slurry Pump Gland Service Water

Small pressure reducing valves have long been used to control the pressures into the glands of…

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Preventing waterhammer damage in pipelines

In part 1 of this article we looked at the use of check valves to reduce…

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SURGE SEMINAR

Download all the details of the 2013 Surge Seminar here: Surge Seminar 2013. Ultra has been…

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Choosing the right check valve to prevent waterhammer damage.

Waterhammer destroys pipes, pumps, valves and reputations. It’s often caused by pump power failures and valves…

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Level Control Systems for Reservoirs

Choose the wrong level control valve and it could fail in weeks. There are many ways…

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AIR VALVES ON WATER PIPELINES

Most design engineers are aware of the danger of having air in Liquid pipelines. Problems associated…

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SURGE SEMINAR 2011

Visit www.surgeseminar.co.za for more reasonsto register now for Surge 2011. ©Point 4 Business Services 2011

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ENGINEERING SALES TRAINING

What isolating valve to use in water systems is almost like asking “what shall I eat…

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Tel: 011 452 6514
Fax: 086 547 0555
Cell: 083 458 8053

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Peter@ultravalves.co.za

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Fax: 086 691 2057
Cell: 082 823 9937

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Fax: 086 691 2057
Cell: 082 261 0376

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Stirling@ultravalves.co.za

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