Gas Backflow Preventers

Description: Semi Automatic Gas Cabinet Systems for Handling Toxic and Flammable Process Specialty Gases in High Tech The Semi Automatic Gas Cabinet System is a robust and cost-effective safety solution designed for the controlled distribution of toxic, flammable, and corrosive specialty gases.

• Application: Gas
• Body Material: Stainless Steel

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.

• Valve Size: 0.25 to 2 inch
• Pressure Rating: 200 to 600 psi
• Media Temperature: 150 F
• Number of Ports/Ways: 2

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 enter the inlet port. The compact

• Valve Size: 0.4724412 inch
• Pressure Rating: 6,000 psi
• Media Temperature: -22 to 140 F
• Number of Ports/Ways: 2

Description: The Butt Weld (B4) check valve is a one piece body machined from bar stock, eliminating porosity concerns and providing uniform density for more consistent welds. Made to ASME/ANSI B16.25 for schedule 40 pipe, it carries rugged, dependable Check-All trim with a wide variety of seat materials and

• Valve Size: 1.5 inch
• Pressure Rating: 1,500 to 4,000 psi
• Flow (Cv): 18.8
• Number of Ports/Ways: 2

Description: The Connector Valve is a check valve with a hex nipple or connector housing. It is designed to be used in installations where check valves with male pipe threads are required. The Connector Valve is adaptable for use as a check valve, vacuum breaker, or low pressure relief valve. Two valves used in

• Valve Size: 1.25 inch
• Pressure Rating: 3,000 psi
• Flow (Cv): 10.2
• Number of Ports/Ways: 2

Description: The 3-A Sanitary Check Valve is an all 316/316L stainless steel check valve with a standard 32 Ra or better finish, (finer available) for use in new or existing sanitary systems. The 3SC design seals on the ID of sanitary ferrules with 3-A specified materials (standard is EPDM). The valve seals

• Valve Size: 2 inch
• Pressure Rating: 725 psi
• Flow (Cv): 27.2
• Number of Ports/Ways: 2

Description: The Tubing Check Valve-Flared is a three piece constructed valve with 37º flared ends which conform to J. I. C. and S. A. E. Hydraulic Standards. These valves are designed for maximum flow with minimal pressure drop. Available Materials: 316 Stainless Steel (SS) Brass (BR) Carbon Steel (CS)

• Valve Size: 2 inch
• Pressure Rating: 1,600 to 3,000 psi
• Flow (Cv): 60
• Number of Ports/Ways: 2

Description: Valves NOV's Valve Division manufactures top of the line Reset Relief Valves, Shear Relief Valves, Float Valves, and Gate Valves for the oil and gas industry. These product lines protect drilling equipment from pressure spikes and backflow, which can lead to premature failure of

• Controlled Pressure Range: 0 to 10,000 psi
• Valve Type: Check Valves, Gate / Knife Valves, Pressure Relief Valves
• Media: Gas
• Features: Lift Check Valves

Description: Valves reliably prevents backflow where leak-tight shutoff off of liquids or gases is required. The standard construction uses a Buna-N o-ring, the O-Ring Check Valve is also available with the following O-rings: Viton, PTFE and Kalrez. Temperature ranges for the O-Ring Check Valve are:

• Pressure Rating: 15,000 to 100,000 psi
• Media: Air, Compressed Air, Gas
• Valve Type: Check Valves

Description: class of valves. Commonly, widely used in the fields of Chemical, Aerospace, Automotive, Mechanical Engineering, Oil & Gas, and so on. DCW PTFE Ball Valve Seats Designed for Your Application: Extreme Toughness Excellent Wear Resistance Excellent heat resistance Chemical resistance Wide range

• Features: Angle Valves, Back Flow Preventer Assembly, Ball Valves, Choke Valves, Diaphragm Valves, Foot Valves, Piston Valves, Pressure Relief Valves, Safety Valves, Sanitary / Hygienic Valves, Shut Off Valves, Solenoid Valves
• Media: Chemical, Cold Water, Gasoline / Diesel Fuel, Ground Water, High Purity Gas, Hot Water, Hydraulic Fluid, LP - Gas, Potable Water, Salt Water, Specialty / Corrosive Gases, Wastewater, Water

Description: various industries, such as Aerospace, Automotive, Electronics, and Chemical analysis, Oil and Gas, Engineering, Medical and so on, because of its excellent performance below, Excellent chemical resistance, like outstanding corrosion protection Wide range of service temperature Excellent

• Features: Angle Valves, Back Flow Preventer Assembly, Diaphragm Valves, Foot Valves, Manual / Hand, Needle Valves, Piston Valves, Pressure Relief Valves, Safety Valves, Sanitary / Hygienic Valves, Shut Off Valves, Solenoid Valves
• Media: Chemical, Cold Water, Gasoline / Diesel Fuel, High Purity Gas, Hot Water, Hydraulic Fluid, LP - Gas, Potable Water, Salt Water, Specialty / Corrosive Gases, Steam, Wastewater, Water

Description: 4" exposed non-freeze anti-siphon automatic draining wall faucet features an exterior chrome finish. Features And Benefits Commercial/residential exposed, non-freeze, dual hot and cold wall faucet with external automatic draining backflow preventer Ideal for applications, such as

• Applications: Commercial

Description: Series SD-2 Dual Check Valves for Carbonated Beverage Machines prevent the reverse flow of contaminated water, such as carbon dioxide gas and carbonated water, from entering into the potable water supply due to backpressure backflow. It consists of a stainless steel body construction

• Valve Size: 0.25 to 0.375 inch
• Valve Type: Check Valves

Description: WaiWela water heater by Paloma - Natural Gas. Includes 1 bath remote control, wall mount, and ZURN P1000A pressure relief valve. 199,900 Btu/Hr. WaiWela water heaters by Paloma Industries, the #1 gas appliance manufacturer in Japan. The residential model PH28 incorporates TWO unique

• Heater Type: Water Heater

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 which initiates

• Filter Size Rating: 0.01 microns
• Maximum Air Volume: 675 SCFM
• Maximum Inlet Pressure: 250 psi
• Connection: 1½" NPT, 1" NPT, 1/2" NPT, 1/4" NPT, 2" NPT, 3/4" NPT, 3/8" NPT

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 which initiates

• Filter Size Rating: 0.3 microns
• Maximum Air Volume: 1,125 SCFM
• Maximum Inlet Pressure: 250 psi
• Connection: 1½" NPT, 1" NPT, 1/2" NPT, 1/4" NPT, 2" NPT, 3/4" NPT, 3/8" NPT

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 which initiates

• Filter Size Rating: 3 microns
• Maximum Air Volume: 1,856 SCFM
• Maximum Inlet Pressure: 250 psi
• Connection: 1½" NPT, 1" NPT, 1/2" NPT, 1/4" NPT, 2" NPT, 3/4" NPT, 3/8" NPT

Description: Series SD-3 Dual Check Valves with Atmospheric Port & Strainer for Carbonated Beverage Machines prevent the reverse flow of polluted water, such as carbon dioxide gas and carbonated water, from entering into the potable water supply due to backpressure backflow. It consists of

• Valve Size: 0.25 to 0.375 inch
• Valve Type: Check Valves

Description: reputation in refineries, petrochemical, gas liquefaction, other process industries. They are also frequently used in HVAC applications because of their cost-efficient design and non-slam properties. Double door check valves are spring loaded for fast, non-slam shut-off against the elastomer

• Valve Type: Check Valves

Description: 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 secondary closing mechanism,

• Valve Size: 2 to 16 inch
• Valve Type: Check Valves

Description: Manufactured on the same principle as the revolutionary all-rubber Tideflex® Check Valve, the Series 2633 is a simple inline check valve for threaded end pipelines. Simple in design, the Series 2633 consists of a body, two endcaps and the working element - the Tideflex® elastomer check sleeve. In

• Valve Type: Check Valves
• Primary Material: Stainless Steel

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 preventing

• Maximum Discharge Flow: 0.625 GPM
• Media Temperature: 200 F
• Power Source: AC Powered
• Features: Other

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 preventing

• Maximum Discharge Flow: 0.00047550969 GPM
• Media Temperature: 500 F
• Power Source: AC Powered
• Pump Type: Peristaltic Pumps, Positive Displacement Pumps, Self-Priming Pump

Description: treatment, oil and gas, and chemical processing to prevent backflow and ensure the safe and efficient flow of fluids. Technical specifications Design and Manufaciure:DIN3840, BS EN 1868 Face to Face Dimensions:DIN3202, BS EN 558-1 Flanged ends: DIN2543, BS EN 1092-1DIN2544, DIN2545,

• Features: Bolt Flange
• Valve Type: Check Valves, Directional Valves

Description: to flow in one direction while preventing backflow, and safeguarding pumps, compressors, and other equipment from potential damage. API check valves are designed specifically for applications in the oil and gas sector and are subjected to rigorous testing and quality assurance

• Valve Type: Check Valves