High Pressure Backflow Preventers

Description: Irrigation backflow preventer 2-975XL with wye pattern provides high hazard protection for your commercial water applications. This backflow device has two check valves which are accessible tor maintenance without removing the relief valve at the entire device from the

• Media: Water

Description: Reduced Pressure Principle Backflow Preventer 1" 375 Reduced Pressure Principle Assembly offers high hazard protection against backsiphonage and backpressure in non-potable water applications. Most often used by irrigation contractors, the top benefits of the

• Media: Water

Description: Reduced Pressure Principle Backflow Preventer 4-375 is utilized where a potential high health hazard exists and is ideal for use when lead-free valves are required protecting against both backsiphonage and backpressure of contaminated water into the potable water supply.

• Media: Water

Description: The Zurn Wilkins 375 Reduced Pressure Principle Backflow Preventer provides high hazard protection for all applications. The flanged, epoxy coated ductile iron body is available with multiple shut-off valve options for installation versatility. To view all options, see

• Media: Water

Description: Series 911, 911S Combination Fill Valve and Backflow Preventers are for use in commercial and residential hydronic heating systems to provide make-up water to the boiler, and prevent backflow when supply pressure falls below system pressure. It consists of a

• Media: Water, Steam
• Valve Size: 0.5000 inch

Description: Series BD911 combination fill valve and backflow preventer consists of a Model 9D backflow preventer and Model BD1156F feed water pressure regulator in one pre-assembled unit. This valve is a high capacity valve designed for use on boiler feed lines to

• Valve Size: 0.5000 inch

Description: backflow preventer and a bronze Watts Model 1156F feed water pressure regulator in one pre-assembled unit. Model B911 has union NPT x NPT connections. Model B911S has union solder x NPT connections. The Series B911, B911S has a high capacity fill valve that provides quick

• Media: Water, Steam
• Valve Size: 0.5000 inch

Description: The Universal High Pressure check valve is a one piece body machined from bar stock with female pipe threads. The valve is designed and manufactured for high pressure applications. For applications below 3000 PSIG, view our UN-3 series. Available Materials: 316 Stainless

• Media: Air, Chemical, Hydraulic Fluid, Water, Hot Water, Cold Water, Ground Water, Potable Water, Salt Water, Gas, Gasoline / Diesel Fuel, High Purity Gas, LP - Gas, Natural Gas, Sour Gas, Specialty / Corrosive Gases, Steam, Other
• Valve Size: 1.25 inch

Description: The check valve permits free flow in one direction and no (checked) flow in the opposite direction. This valve is specified in many applications because of its very low cracking pressure (typically less than 0.5 psig), its excellent repeatability, and leak-tight operation. The unique design

• Media: Air, Breathable Air, Compressed Air, Chemical, Hydraulic Fluid, Water, Hot Water, Cold Water, Ground Water, Potable Water, Wastewater, Gas, Gasoline / Diesel Fuel, High Purity Gas, LP - Gas, Natural Gas, Other
• Valve Size: 0.0500 inch

Description: Model TK-99D Delta Lite Backflow Preventer Test Kit is an advanced hand-held instrument designed to test pressure vacuum breakers, spill resistant vacuum breakers, double check valve assemblies, double check detector assemblies, reduced pressure zone backflow

Description: The Universal Low Pressure check valve is a one piece body machined from bar stock and is designed for minimum pressure drop. The valve is light, compact, and provides maintenance free dependable service. For applications above 3000 PSIG, view our UN-10 series. For applications where

• Media: Air, Chemical, Hydraulic Fluid, Water, Hot Water, Cold Water, Ground Water, Potable Water, Salt Water, Gas, Gasoline / Diesel Fuel, High Purity Gas, LP - Gas, Natural Gas, Sour Gas, Specialty / Corrosive Gases, Steam, Other
• Valve Size: 0.3750 inch

Description: materials and cracking pressures to choose from. Note: Please take precautionary measures when welding to prevent heat build-up and possible damage to the valve seat. Available Materials: 316/316L Stainless Steel (SS) Alloy B (HB) Carbon Steel (CS) Alloy C-276 (HC) Alloy 20 (A2) MONEL®

• Media: Air, Chemical, Hydraulic Fluid, Water, Hot Water, Cold Water, Ground Water, Potable Water, Salt Water, Gas, Gasoline / Diesel Fuel, High Purity Gas, LP - Gas, Natural Gas, Sour Gas, Specialty / Corrosive Gases, Steam, Other
• Valve Size: 0.7500 inch

Description: reducer coupling. The Bushing Valve also makes an excellent vacuum breaker. The high flow rate insures maximum effectiveness for vacuum breaker service. By reversing the direction of flow it can also be used as a low pressure relief valve. Available Materials

• Media: Air, Chemical, Hydraulic Fluid, Water, Hot Water, Cold Water, Ground Water, Potable Water, Salt Water, Gas, Gasoline / Diesel Fuel, High Purity Gas, LP - Gas, Natural Gas, Sour Gas, Specialty / Corrosive Gases, Steam, Other
• Valve Size: 1 inch

Description: Series M200Na Double Check Valve Assemblies are specifically designed for high flow fire systems to prevent the backflow of pollutants that are objectionable but not toxic, from entering into the potable water supply. Its compact housing consists of two independently operating

• Media: Water, Hot Water, Cold Water, Potable Water
• Valve Size: 2.5 to 4 inch

Description: FILTER REGULATOR, HIGH PRESSURE, BACKFLOW FUNCTION, 3/8 PORT SIZE. FREE 2 YEAR RADWELL WARRANTY

• Media: Air

Description: Reliable volumetric flow monitoring of the internal cooling of the drill on machine tools With integrated backflow preventer Intuitive continuous adjustment of the switch points Robust housing with very high pressure rating Very short response time

• Electrical Output: Switch
• End Fittings: Threaded
• Media Temperature Range: 0.0 to 60 F
• Operating Pressure: 200 psi

Description: Reliable volumetric flow monitoring of the internal cooling of the drill on machine tools With integrated backflow preventer Precise linearized analogue output Robust housing with very high pressure rating Very short response time

• End Fittings: Threaded
• Media Temperature Range: 0.0 to 60 F
• Operating Pressure: 200 psi

Description: This miniature high pressure check valve is only .500” in diameter and 1.8” in length. This check valve’s robust design allows it to prevent backflow in high pressure systems up to 8000 psi. It is ideal for applications with flow rates up to 20 gpm. Features

Description: This miniature high pressure check valve is only .250” in diameter and 1” in length. This check valve’s robust design allows it to prevent backflow in high pressure systems up to 8000 psi. It is ideal for applications with flow rates up to 5 gpm. Features

• Valve Type: Check Valves

Description: High pressure valve with check valve for inert gases up to 6,000 psi (420 bar) The high pressure valve type TV17GR is designed as a shut-off valve for pressurized gases. The valve prevents backflow of the medium at the outlet port. Therefore no gases can

• Connection: Threaded
• Material of Construction: Brass / Bronze, Stainless Steel
• Media: High Purity Gas
• Pressure Rating: 6000 psi

Description: range best suited for your application Permits backflow of downstream pressure Facilitates the handling of harsh media The Fairchild Model 10 is a precision pressure regulator designed for applications that require high performance and accurate process control. Stability

• Controlled Pressure Range: 0.0 to 400 psi
• Pressure Rating: 500 psi

Description: A complete range of gate, globe and check valves for all of your high pressure and high temperature applications, proven over years of service in conventional thermal and nuclear power plants as well as other HP steam services around the world. Also preferred in high

• Valve Size: 2 to 24 inch
• Valve Type: Butterfly Valves, Check Valves

Description: " Nonmetallic and Biocompatible Low Cracking Pressure of 1 psi (0.07 bar) Excellent Chemical Resistance Upchurch Scientific® Inline Check Valves provide excellent backflow protection for sensitive equipment along with outstanding chemical

• Valve Type: Check Valves, Pressure Relief Valves

Description: Designed to prevent surge, backflow, and water hammer in liquid service. These check valves are available in cast iron, bronze or stainless steel, pressure and temperature conditions will dictate the appropriate body material. For air and gas applications, consult factory.

• Connection: Threaded
• Material of Construction: Brass / Bronze, Cast Iron, Stainless Steel
• Media: Gasoline / Diesel Fuel, High Purity Gas, LP - Gas, Natural Gas, Sour Gas, Specialty / Corrosive Gases
• Pressure Rating: 200 to 600 psi

Description: Our IPS Check Valve feature all PTFE wetted surfaces for excellent performance in all high purity applications. Our PTFE design resists chemical corrosion and other elements within a harsh process environments. IPS Check Valves are commonly found as backflow preventers in clean

• Connection: Threaded, Tube Fitting
• Material of Construction: PTFE - Teflon®
• Media Temperature: 230 F
• Pressure Rating: 50 psi

Description: . Although water induction into the high and intermediate pressure turbines have historically been recognized as the most damaging, experience has shown that water induction in low pressure turbines can cause significant damage. Key changes to this revision include: inclusion of

Description: . Although water induction into the high and intermediate pressure turbines have historically been recognized as the most damaging, experience has shown that water induction in low pressure turbines can cause significant damage. Key changes to this revision include: inclusion of

Description: Inner core - Prevents element from collapsing in backflow conditions Optional internal pleated prefilter - 3.0 micron media protects the fine borosilicate fibers from large particles, extending the life of the coalescing media Inner media wrap - Allows crossflow of gas

• Bowl Drain: Manual, Automatic
• Bowl Material: Aluminum
• Filter Type: Coalescing
• Maximum Air Volume: 1125 SCFM

Description: processing, and alcohols. Use for liquids, gases, pressure, and vacuum applications. Operating ranges are 0 to 50 PSI and -40 to 126°C. Autoclavable, zero maintenance, 1-1/4 inch length unit installs in any position. Prevents damage to equipment, pumps, and flow systems by

• Housing Material: Plastic
• Maximum Discharge Flow: 0.0022 GPM
• Media Temperature: 500 F
• Power Source: AC Powered

Description: flow, reverse differential pressure forces the membrane against the disc to prevent backflow. Waterflex Valves eliminate bang and slamming problems common to conventional swing check valves. Contact Red Valve to see how we can find a solution to fit your needs. Features

• Media Description: Water

Description: incorporate a swing-type disc that allows flow in one direction while preventing backflow in the opposite direction. The “positive safety” aspect refers to additional safety mechanisms implemented in these valves. For example, some positive safety swing check valves are equipped with a

• Valve Size: 2 to 16 inch

Description: also be ordered for double meter sets or tandem sets for meter and regulator or meter and backflow preventer. The body of the meter box is made from rigid PVC which has a high insulating "R" value to resist "frost bridging" inside the box. For extremely cold climates, an

Description: scientifically designed to move large volumes of air at high pressures. The large hub prevents backflow of air, which is an important feature in the design of this wheel. A low pitch and a higher hub-to-diameter ratio make the VB impeller more effective than VA models in

• Design Configuration: Axial, Other
• Drive Options: Direct Drive, Belt Drive
• Features: Dampers / Louvers
• Material: Aluminum, Steel, Stainless Steel