PRODUCTS

1. ISOLATING AND FLOW CONTROL VALVES
    
2. CONE VALVES

 
3. BALL VALVES

 
4. BUTTERFLY VALVES

 
5. COMBINED AND NON-SLAM CHECK VALVES

 
6. AIR AND VACUUM VALVES

PRODUCTS

The performance of a water pipeline depends largely on the proper selection of isolating and flow control valves, as pressure drop means energy consumption for the pumps. Different types of valves can be supplied:

Cone valves

The cone valves are built tough to last under the most severe conditions. They are 100% full port, conical plug-type valves with a circular waterway through both body and plug in the fully open position. These cone valves are made of cast gray iron or ductile iron construction with ANSI B16.1, class 125/150lbs flanges for working pressures to 175psig, sizes range from 6’’ to 60’’. For working pressures to 275psig, we offer cast ductile iron construction with ANSI B16.1, class 250/300lbs flanges. Cone valves of cast or fabricated steel construction are available with ANSI B16.5, class 150lb. and class 300lbs flat-face and raised-face flanges for working pressures to 720psig. Valves are provided with a skirted plug.

The cone valves feature wide, weld-on monel metal seats which eliminate the erosion and abrasion failures common to polymer and elastomer seals in other types of valves. The metal to metal monel seats do not required replacement or preventive maintenance and guarantee dependable operation. Metal to metal seating allows the valve to be installed in though applications where velocities are high and continuous throttling is necessary.

Thousands of these cone valves have been in service up to 60 years and have proven to be almost completely trouble-free.

Metal to metal seats mate firmly and accurately to maintain a drop-tight seal. Under normal operating conditions, the seal will last the life of the valve.

Valves are built with solid bronze bearings at the upper and lower trunnion of the plug. Solid bronze construction means longer, trouble-free service.

One person can always operate the valve, even one that has been static for several years.

Ball valves

These trunnion-mounted, full bore metal-seated ball valves are specifically designed for water works, and are available from 4’’ to 60’’ for pressures up to 400psi.

This is a heavy duty ball valve built especially for pump stop and check, pressure regulating, flow control and critical shut-off service in municipal systems. It is a superior valve because of its unique design features, uncompromising use of quality materials and the precision of its fabrication and assembly.

Ball valves will control pressure differentials and flow rates to extremely close limits without hunting, vibrating or excessive noise. The valves act as an energy absorber in any throttled position due to the back pressure inside the valve body and around the ball. This together with durable metal to metal seats which allow line velocities in excess of 100ft/sec, make ball valves ideal for throttling applications.

Thousand of these ball valves have been in service over a 40 year period almost completely trouble-free.

When the valve is opening or closing, flow goes through and around the ball, flushing out debris. This makes the valve ideally suited for Raw Sewage Service, assuring complete closing of the valve.

Metal to metal seats mate precisely, maintaining a drop-tight seal. The seal lasts the life of the valve because of the durability of the metal and the eccentric motion of the seats.

True full port opening results in no more head loss than an equivalent length of pipe.

The trunnion mounted ball allows the majority of the hydraulic load to be supported by the trunnions, resulting in low bearing pressure and no shaft fatigue.

Bearing materials are made of different degrees of hardness preventing galling and extending life. Bearing pressures are low compared to similar valves (900psig for class 150, 1500psig for class 250). Solid bronze construction means longer, more trouble-free service, and like our metal seats, the bearing will last the life of the valve.

Our competitors say their seats are easily replaceable because they have to replace their seats. Under normal operating conditions you won’t have to replace our metal seats.

Butterfly valves

These double-eccentric butterfly valves, available from 4’’ to 120’’ for pressures up to 40bar, can be used as tight shut-off valves, as well as to regulate a flow. The body and disc are in ductile iron or in steel, and can be vulcanized for corrosive water, or epoxy-lined for drinking water.

A pressure-drop must be taken in account.

Check valves look different but each performs the same basic function: flow thru one direction and no flow (check) return. Check valves are commonly installed on the discharge side of the pump. The most important role of a check valve is to act as the automatic shut off valve when the pump stops to prevent draining of the system which the pump fills. However, each check valve has different shut off characteristics. The following brief study of these characteristics will help you to select the best check valve for the job.

Pressure Surge (Water Hammer) can be greatly controlled by selecting the correct check valve i.e., Silent Checks shut off very fast, 1/20th to 1/10th second, making excellent surge protection devices when pumping short distances less than half a mile. Conversely, the Automatic Control Check Valve has extremely low (and variable) speed shut off; an excellent surge protection device when pumping long distances (more than half a mile).

No single check valve is all serving. For example, the Lift Check Poppet (Center Guided) would be excellent for clean fluid, but a poor selection for waste water because of the obstructive flow passages. Consider all aspects of your pumping application before making your selection.

We have years of practical and theoretical knowledge to help finalized your check valve selection.

Check valves are made in many types and configurations. Each type has unique desirable features, and some features are not necessary for your applications. We makes six (6) types and fourteen (14) styles of check valves, therefore, we offer the design engineer honest, objective application data so he may select the correct check valve for your installation. Check valves look different, but function the same. They allow flow thru in forward direction, and no flow (check) reverse. However, closing characteristics, flow area, head loss and cost for each type check valve, varies greatly. First observe these differences then select the check valve best suited for your application.

Automatic Control Check Valves
Excellent where Pump Discharge Control is essential, due to high velocities (10 FPS or more), and high pressures (over 100 PSI). Electrically operated, to permit remote control of automatic pump stations, features: Shut-Off Valve - Throttle Flow Valve - Control Check Valve - Drain Valve and during electrical power loss, this valve will automatically shut-off, without assistance. Equipped with manual override and replaceable Buna-N-Seat. Body-Cast Iron or Ductile Iron, Disc-Ductile Iron, Shaft-High Strength Stainless. Ratings 125#, 250#, 300# class. Availability 20 weeks Sizes 6" thru 48".
Slanting Disc Check Valves
The most reliable and efficient check valve for the engineer. The disc pivot point is off center, a precise constructed feature to slow the closing of the disc. Split body design increased flow area around the disc 40%, hence, the lowest head loss. Seating is metal to metal. Valve life rating minimum 25 years. Available as a free swing check; free open control and close; or control open and close. The body is available in Cast Iron, Ductile Iron, Cast Steel or Stainless Steel. Pivot Pins and Seats-Bronze or Stainless. Highly recommended for maximum efficiency in Power and Water Pumping Stations. Ratings 125#, 250#, 300#, 600# class. Cast Iron from stock. Steel 16 weeks. Sizes 2" thru 72".
Cushioned Swing Check Valves
Heavily constructed, exceeds AWWA standards used on Water or Raw Sewage Pumping Stations. Available with Air Cushion (Fast Closing), or Oil Cushion (Slow Closing) to prevent slam and water hammer. Flow area is full ported and equal to pipe area. All internals easily replaced thru top cover without removing valve from the pipeline. Ratings 125#, 150#, 250#, and 300# class. Availability stock thru 16 weeks. Sizes 2" thru 66".
Rubber Flapper Swing Check Valves
Unique Simple Design - no moving parts. The Flapper does not swing from a Hinge Pin, it flexes open. The seat is on a 45 degree angle. The Flapper travels 35 degrees from open to close, very fast, and before column reversal can occur, hence, it's non-slamming. The flapper is made of synthetic rubber without any moving parts. The valve can be buried and requires no regular maintenance. Recommended for Water, Sewage, Gas, Oil and Rubber lined for Chemicals. Cast Iron Body rated 125# class 175 PSI working pressure. Stock to 4 weeks. Sizes 2" thru 36" (larger sizes available).
Double Door Check Valves
Very short length, results in lowest purchase and installation costs. Double doors are spring loaded for fast non-slam shut-off against rubber seat in the body. Recommended for Refineries, Petro Chemical Plants, and Water Pump Stations, Body and Door material-Iron, Steel, Bronze or Stainless. Spring and Hinge Pin-Stainless. Body Seal-Buna-N or other materials for higher temperature rating. Ratings 125#, 250#, 300#, 600#, 900#, 1500#, 2500# class. Stock to 12 weeks. Sizes 2" thru 72".
Silent Check Valves
Excellent to prevent Water Hammer, in multi-story buildings and vertical turbine pump installations, when pumping from a well to an elevated reservoir. The Valve closes, SILENTLY! Low in cost, reliable and requires no regular maintenance. Principle of operation: When pump stops, spring forces disc closed instantly against slight pump head at zero velocity, (theoretically a static condition) hence, SILENT CLOSURE! Body - Cast Iron, Ductile Iron, Cast Steel, Stainless Steel or Bronze. Internals - Bronze, Stainless. Ratings 125# thru 600# class. Available Immediate or maximum 8 weeks. Sizes 1" thru 10".

Which Air Valve Should I Use?
Air Valves are essential components complete pipeline design. The designed pipeline flow capacity will not be achieved without essential air valves because of air pocket buildups which can cause flow capacities to be reduced by 5% to 15% of designed flow.... unfortunately reduced capacities may go unnoticed because air is an invisible culprit in pipelines. Air pockets increase energy consumption because pumping operation will be at higher heads to overcome air constricted flow. Air valves are not expensive and more than pay their way by greatly improving pipeline efficiency. Air Valves represent low cost insurance to protect expensive Pipelines and Pump Stations. It is a well known fact, air pockets are a major cause of pressure surges and water hammer in pipelines.
Air Release Valves
Air Release Valves function to release air pockets that collect at each high point of a full pressured pipeline. Air Release Valves can open against internal pressure, because the internal lever mechanism multiplies the float force to be greater than the internal pressure. This greater force opens the orifice whenever air pockets collect in the valve. Air Release Valves are essential for pipeline efficiency and water hammer protection. Immediate availability. Sizes 1/2" thru 3". Sizes 4" thru 3".
Air and Vacuum Valves
Are float operated, having a large discharge orifice, equal in size to the valves inlet. Air and Vacuum valves allow large volumes of air to be exhausted from - or - admitted into a water pipeline as it is being filled or drained. As the pipeline fills, water enters the Air Valve, raises the float and shuts-off. When draining the pipeline, the float drops, allowing air to enter, preventing vacuum, possible pipeline collapse and damaging water column separation. Air & Vacuum Valves are an efficient means to fill and drain pipelines. Immediate availability. Sizes 1/2" thru 6".
Combination Air Valves
As the name implies, combines features of Air & Vacuum Valves and Air Release Valves. These valves are also called Double Orifice Air Valves. These Valves are installed on all high points of a system where it has been determined dual function Air & Vacuum and Air Release Valves are needed to vent and protect a pipeline. Generally, it is sound engineering practice to use (CAV) instead of simple purpose Air & Vacuum Valves. (CAV) are available in two body styles - (1) single body combination (2) custom built combination (CCAV) with two bodies. The single body (CAV) is used where compactness is preferred and / or where risk of tampering exists due to accessibility of the installation. Immediate availability. Sizes 4" thru 36".
Slow Closing Air and Vacuum Valves
Are standard Air and Vacuum Valves mounted on a Surge Check Unit. The Air and Vacuum Valve operates in the normal fashion allowing air to escape freely at any velocity (maximum discharge velocity is approximately 300 feet per second at 6.7 PSI; however, good pipe line design restricts velocity flows of air to 10 feet per second which occurs at approximately 1 PSI). The Surge Check Unit operates on the interphases between the kinetic energy in the relative velocity flows of air and water. The Surge Check is a normally open valve, spring loaded, so that air passes through unrestricted, but when water rushes into the Surge Check Unit, the disc commences to close against the spring and reduces the rate of flow of water into the air valve by means of throttling holes in the disc. This ensures normal gentle closing of the Air and Vacuum Valve, regardless of the initial velocity flow involved and minimizes surges when the valve closes. As soon as the Air and Vacuum Valve is closed, the pressure on both sides of the surge Valve disc equalizes and the disc automatically returns to its open position. This means an Air and Vacuum Valve does not need an incipient vacuum to open, but can open at any time the water level drops and line pressure approaches atmospheric and immediately have full re-entry flow of air into the pipe line before a vacuum can form. Ratings 125# thru 900# class. Immediate availability. Sizes 3" and larger.
Air Release Valves & Air And Vacuum Valves for Sewage Lines
Operate same as Air Valves for Water, differing only in appearance with elongated taller bodies. Elongated bodies minimize clogging by permitting use of a much longer float stem, to prevent the sewage from fouling up the mechanism. For ease of maintenance, Flushing Attachments are recommended with the Valves, as shown. When adding Sewage Air Valves to your pipeline, the same criteria applies, as with the standard Air Valves. However, the potential for air entrapped with Sewage pipelines, is even greater than that found in water lines, because Sewage media generates large quantities of gases. Therefore, it is recommended each high point be protected with an automatic Sewage Air Release Valve. Available Immediately.
Syphon Air Valve (Make and Break)
SYPHON AIR VALVES are a unique type of Air Vacuum Valve incorporating a paddle which hangs down the main pipeline flow stream. The valve will allow a syphon flow to be developed and maintained after stopping the pump. Subsequently should the syphon flow reverse, the paddle swings in reverse causing the port to open and break the syphon. The Syphon Valve requires no electrical connections or regular maintenance, and is ideally suited for remote out environments. In recent years with the emphasis on energy conservation, consultant engineers for water and water, often consider pumping by means of a syphon loop. SYPHON AIR VALVES are ideally suited for application. Solenoid valves for small diameter syphons, or pneumatically operated butterfly valves, for large diameter syphons, may also be adapted for this application, but installation and maintenance is complicated cumbersome. For example, power lines and air lines, must be installed to operate these valves, an air compressor is also needed. SYPHON AIR VALVES are mechanically operated, requiring no auxiliary power. They merely respond to flow, in either direction, to make the syphon or break it, and the maintenance is virtually nil. Immediate Availability. Sizes 3" to 16" for syphons up to 60" diameter.
Hydraulically Controlled Air & Vacuum Valves
"For positive pipeline protection against damaging pressure surges." The operating principle of this valve is the same as the CONVENTIONAL Air and Vacuum Valve, with one exception ... Hydraulically Controlled Air and Vacuum Valves are normally open (because the heavy cast float is not buoyant), and slowly close, only after spilling a regulated volume of water to prevent a pressure surge. This valve provides excellent pipeline protection against primary and secondary surge pressures which usually occur when filling or draining a pipeline. The closing time of this valve is variable and adjustable by means of a hydraulic control system.Immediate Availability thru 16 Weeks. Sizes 4" thru 20". Ratings 125# and 250# class.
Vacuum Relief/Air Inlet Valves
Vacuum Relief/Air Inlet Valves are a normally closed valve and any time the System Pressure becomes Negative - IT OPENS IMMEDIATELY - allowing air into the system to prevent a vacuum forming. When system pressure returns to positive, the Vacuum Relief/Air Inlet Valve closes air tight. Standard VP,/AlVs are designed to open with a minimal 1/4 PSI pressure differential across the orifice. Higher or lower relief settings are available to suit the application. Rated 250# class available. Availability immediate thru 16 weeks. Sizes 3" thru 36".
Air Valves For Vertical Turbine Pumps with Water Diffuser
Air Valves For Vertical Turbine Pumps with Water Diffuser essential to vent air from the pump column at the point of discharge from the pump and in advance of the pump check valve. Each valve is equipped with a water diffuser, which performs like the water bubbler on a water faucet, breaking down the solid destructive column of water into aerated, non-destructive stream of water. Likewise, the surging water entering the deep well air valve is and broken down into a smooth flowing stream of water. In this manner, positive closure of the vertical turbine air valve without water hammer or damage to the valve pump, is accomplished additionally. The Double Acting Throttle Device permits regulation of the flow of air escaping from the valve to establish a back pressure, slowing the rising column of water and the surge in line during start up is greatly reduced. The Double Acting Throttling Device spring loaded mechanism allows full flow air in draining of system. This action results in a smoother trouble free operation of the pumping system. Immediate Availability thru 16 Weeks. Sizes 1/2" - 3".