Steam Backflow Preventers
from Check-All Valve Mfg. Co.
The Bushing Valve is a check valve with a standard bushing housing. The valve is adaptable to many types of service applications. It has very little restriction and produces a low pressure drop. It can be used quite effectively in systems where flow and pressure drop are critical by the use of a... [See More]
- Media: Air; Chemical; Hydraulic; Water; Hot Water; Cold Water ; Ground Water; Potable Water; Salt Water (optional feature); Gas; Gasoline / Diesel Fuel (optional feature); High Purity (optional feature); LP Gas (optional feature); Natural Gas (optional feature); Sour Gas (optional feature); Specialty Corrosive (optional feature); Steam; Liquids
- Maximum Pressure: 3000.00
- Valve Size: 0.50
- Primary Material: Brass / Bronze; Stainless Steel; Steel; Exotic Metal; Alloy 20, Alloy C-276, Titanium
from Watts
Series B911, B911S Bronze 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 bronze Watts Model 9D backflow... [See More]
- Media: Water; Steam
- Primary Material: Brass / Bronze
- Valve Size: 0.50
from Check-All Valve Mfg. Co.
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... [See More]
- Media: Air; Chemical; Hydraulic; Water; Hot Water; Cold Water ; Ground Water; Potable Water; Salt Water (optional feature); Gas; Gasoline / Diesel Fuel (optional feature); High Purity (optional feature); LP Gas (optional feature); Natural Gas (optional feature); Sour Gas (optional feature); Specialty Corrosive (optional feature); Steam; Liquids
- Maximum Pressure: 1500.00 to 5000.00
- Valve Size: 0.50
- Primary Material: Stainless Steel; Steel; Exotic Metal; Alloy 20,Alloy C-276, Monel, Alloy B
from Watts
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 brass Watts Model 9D backflow preventer... [See More]
- Media: Water; Steam
- Valve Size: 0.50
from Check-All Valve Mfg. Co.
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... [See More]
- Media: Air; Chemical; Water; Hot Water; Cold Water ; Ground Water; Potable Water; Salt Water (optional feature); Gas; Gasoline / Diesel Fuel (optional feature); High Purity (optional feature); LP Gas (optional feature); Natural Gas (optional feature); Sour Gas (optional feature); Specialty Corrosive (optional feature); Steam; Liquids
- Maximum Pressure: 3000.00
- Valve Size: 0.50
- Primary Material: Aluminum (optional feature); Brass / Bronze; Stainless Steel; Steel; Exotic Metal; Alloy 20, Alloy C-276, Titanium
from Check-All Valve Mfg. Co.
The CAV series of valves are not catalog items but rather are custom designed and tailored to meet customer specific connections or valve configurations. If you have a check valve application where our standard catalog items do not quite match what you are looking for, contact our sales department... [See More]
- Media: Air; Chemical; Hydraulic; Water; Hot Water; Cold Water ; Ground Water; Potable Water; Salt Water (optional feature); Gas; Gasoline / Diesel Fuel (optional feature); High Purity (optional feature); LP Gas (optional feature); Natural Gas (optional feature); Sour Gas (optional feature); Specialty Corrosive (optional feature); Steam; Liquids
- Primary Material: Aluminum; Brass / Bronze; Stainless Steel (optional feature); Steel (optional feature); Exotic Metal; Titanium, Monel
from Check-All Valve Mfg. Co.
Flange Insert valves are the ultimate check valves in flanged systems. They provide the simplest most economical way to install check valves in a piping system, the valve body automatically positions the valve and holds it in place while bolts are being installed and tightened. All that is required... [See More]
- Media: Air; Chemical; Hydraulic; Water; Hot Water; Cold Water ; Ground Water; Potable Water; Salt Water (optional feature); Gas; Gasoline / Diesel Fuel (optional feature); High Purity (optional feature); LP Gas (optional feature); Natural Gas (optional feature); Sour Gas (optional feature); Specialty Corrosive (optional feature); Steam; Liquids
- Primary Material: Aluminum (optional feature); Brass / Bronze; Stainless Steel; Steel; Exotic Metal; PVC; PTFE; FEP Encapsulator
- Valve Size: 0.50
from Check-All Valve Mfg. Co.
The Check-All Flanged & Drilled check valve is a one-piece cast body valve with ANSI/ASME B16.5 Class 150 flanged ends. The HVFD series valve is used when higher flow rates and lower pressure drops are required. The valve is available in sizes 1 through 10 inches and standard materials of 316... [See More]
- Media: Air; Chemical; Hydraulic; Water; Hot Water; Cold Water ; Ground Water; Potable Water; Salt Water (optional feature); Gas; Gasoline / Diesel Fuel (optional feature); High Purity (optional feature); LP Gas (optional feature); Natural Gas (optional feature); Sour Gas (optional feature); Specialty Corrosive (optional feature); Steam; Liquids
- Primary Material: Brass / Bronze; Stainless Steel; Steel
- Valve Size: 1.00
from Check-All Valve Mfg. Co.
The Check-All Flanged & Drilled - PTFE Lined check valve is a one-piece body valve with ANSI/ASME flanged ends. The valve has a solid one-piece PTFE liner, which covers the flange faces out to the raised face diameter. All wetted surfaces are fluoropolymer (PTFE/FEP/PFA) including the FEP... [See More]
- Media: Air; Chemical; Hydraulic; Water; Hot Water; Cold Water ; Ground Water; Potable Water; Salt Water (optional feature); Gas; Gasoline / Diesel Fuel (optional feature); High Purity (optional feature); LP Gas (optional feature); Natural Gas (optional feature); Sour Gas (optional feature); Specialty Corrosive (optional feature); Steam; Liquids
- Maximum Pressure: 55.00
- Valve Size: 1.00
- Primary Material: Steel; FEP Encapsulator
from Check-All Valve Mfg. Co.
The Lined Pipe Insert valve is designed to mate between two flanges on most lined pipe systems. It provides the simplest most economical way to install a check valve in a lined piping system. No gaskets are required, just spread the flanges, center the valve and bolt the flanges together. Lined Pipe... [See More]
- Media: Air; Chemical; Hydraulic; Water; Hot Water; Cold Water ; Ground Water; Potable Water; Salt Water (optional feature); Gas; Gasoline / Diesel Fuel (optional feature); High Purity (optional feature); LP Gas (optional feature); Natural Gas (optional feature); Sour Gas (optional feature); Specialty Corrosive (optional feature); Steam; Liquids
- Maximum Pressure: 55.00
- Valve Size: 1.00
- Primary Material: Exotic Metal; PTFE; FEP Encapsulator
from Check-All Valve Mfg. Co.
The Check-All Mini-Check is a three piece constructed check valve. The valve is designed for minimum pressure drops. The three piece construction permits many combinations of end fittings, which makes the valve adaptable for nearly every application. The Mini-Check is available with 1/8, 1/4, and... [See More]
- Media: Air; Chemical; Hydraulic; Water; Hot Water; Cold Water ; Ground Water; Potable Water; Salt Water (optional feature); Gas; Gasoline / Diesel Fuel (optional feature); High Purity (optional feature); LP Gas (optional feature); Natural Gas (optional feature); Sour Gas (optional feature); Specialty Corrosive (optional feature); Steam; Liquids
- Maximum Pressure: 5000.00
- Valve Size: 0.12
- Primary Material: Brass / Bronze; Stainless Steel; Steel; Exotic Metal; Titanium
from Check-All Valve Mfg. Co.
The Sanitary Cartridge Valve is a 316 stainless steel check valve for use in new or existing sanitary systems. The SCV design seals on the ID of sanitary ferrules with replaceable food grade seals (Standard is FDA EPDM). The valves fit the Alfa Laval Inc. Bevel Seat and Tri-Clamp ® fittings, the... [See More]
- Media: Air; Chemical; Water; Hot Water; Cold Water ; Ground Water; Potable Water; Salt Water (optional feature); Gas; Gasoline / Diesel Fuel (optional feature); High Purity (optional feature); LP Gas (optional feature); Natural Gas (optional feature); Sour Gas (optional feature); Specialty Corrosive (optional feature); Steam; Liquids
- Maximum Pressure: 1000.00
- Valve Size: 0.75
- Primary Material: Stainless Steel
from Check-All Valve Mfg. Co.
For over 35 years, the compact, fluoropolymer (PTFE/FEP/PFA), Sanitary Insert Valve has been used as the most economical solution to providing a check valve in a new or existing sanitary piping system. This valve style is designed to fit into grooved-end clamp-type fittings. Since the Sanitary... [See More]
- Media: Air; Chemical; Water; Hot Water; Cold Water ; Ground Water; Potable Water; Salt Water (optional feature); Gas; Gasoline / Diesel Fuel (optional feature); High Purity (optional feature); LP Gas (optional feature); Natural Gas (optional feature); Sour Gas (optional feature); Specialty Corrosive (optional feature); Steam; Liquids
- Maximum Pressure: 55.00
- Valve Size: 0.75
- Primary Material: PTFE; FEP Encapsulator
from Check-All Valve Mfg. Co.
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... [See More]
- Media: Air; Water; Hot Water; Cold Water ; Ground Water; Potable Water; Salt Water (optional feature); Gas; Gasoline / Diesel Fuel (optional feature); High Purity (optional feature); LP Gas (optional feature); Natural Gas (optional feature); Sour Gas (optional feature); Specialty Corrosive (optional feature); Steam; Liquids
- Maximum Pressure: 1000.00
- Valve Size: 1.00
- Primary Material: Stainless Steel
from Check-All Valve Mfg. Co.
The Straight Sided Insert is a thread less check valve. designed to be inserted into any cavity where a check valve is needed and threads are not desired. Available Materials: 316 Stainless Steel (SS). Carbon Steel (CS). Alloy 20 (A2). Alloy C-276 (HC). Brass (BR). Alloy B (HB). MONEL ® (MO) [See More]
- Media: Air; Chemical; Hydraulic; Water; Hot Water; Cold Water ; Ground Water; Potable Water; Salt Water (optional feature); Gas; Gasoline / Diesel Fuel (optional feature); High Purity (optional feature); LP Gas (optional feature); Natural Gas (optional feature); Sour Gas (optional feature); Specialty Corrosive (optional feature); Steam; Liquids
- Maximum Pressure: 3000.00
- Valve Size: 0.50
- Primary Material: Brass / Bronze; Stainless Steel; Steel; Exotic Metal; Alloy 20, Alloy C-276,, Titanium
from Check-All Valve Mfg. Co.
The Tubing Check Valve-Flared is a three piece constructed valve with 37 º 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) [See More]
- Media: Air; Chemical; Hydraulic; Water; Hot Water; Cold Water ; Ground Water; Potable Water; Salt Water (optional feature); Gas; Gasoline / Diesel Fuel (optional feature); High Purity (optional feature); LP Gas (optional feature); Natural Gas (optional feature); Sour Gas (optional feature); Specialty Corrosive (optional feature); Steam; Liquids
- Maximum Pressure: 3000.00 to 8500.00
- Valve Size: 0.25
- Primary Material: Brass / Bronze; Stainless Steel; Steel; Exotic Metal; Titanium
from Check-All Valve Mfg. Co.
The Tubing Check Valve is a three piece constructed check valve with flareless tube ends. The valve is designed for minimum pressure drops. The valves are furnished complete with ferrules and nuts. Available Materials: 316 Stainless Steel (SS). Brass (BR). Carbon Steel (CS) [See More]
- Media: Air; Chemical; Hydraulic; Water; Hot Water; Cold Water ; Ground Water; Potable Water; Salt Water (optional feature); Gas; Gasoline / Diesel Fuel (optional feature); High Purity (optional feature); LP Gas (optional feature); Natural Gas (optional feature); Sour Gas (optional feature); Specialty Corrosive (optional feature); Steam; Liquids
- Maximum Pressure: 3000.00 to 8000.00
- Valve Size: 0.12
- Primary Material: Brass / Bronze; Stainless Steel; Steel; Exotic Metal; Titanium
from Check-All Valve Mfg. Co.
The Union Insert Valve is the threaded pipe counterpart of the Flange Insert Valve. Designed to be inserted into most standard ground joint unions, it provides the simplest and most economical way to install a check valve in a threaded pipe system. A check valve may be installed anywhere in the... [See More]
- Media: Air; Chemical; Hydraulic; Water; Hot Water; Cold Water ; Ground Water; Potable Water; Salt Water (optional feature); Gas; Gasoline / Diesel Fuel (optional feature); High Purity (optional feature); LP Gas (optional feature); Natural Gas (optional feature); Sour Gas (optional feature); Specialty Corrosive (optional feature); Steam; Liquids
- Maximum Pressure: 3000.00
- Valve Size: 0.50
- Primary Material: Brass / Bronze; Stainless Steel; Steel; Exotic Metal; Alloy 20, Alloy C-276, Titanium
from Check-All Valve Mfg. Co.
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 Steel (SS). Alloy B (HB). [See More]
- Media: Air; Chemical; Hydraulic; Water; Hot Water; Cold Water ; Ground Water; Potable Water; Salt Water (optional feature); Gas; Gasoline / Diesel Fuel (optional feature); High Purity (optional feature); LP Gas (optional feature); Natural Gas (optional feature); Sour Gas (optional feature); Specialty Corrosive (optional feature); Steam; Liquids
- Maximum Pressure: 10000.00
- Valve Size: 0.38
- Primary Material: Aluminum (optional feature); Stainless Steel; Steel; Exotic Metal; Alloy 20, Alloy C-276, Titanium
from Check-All Valve Mfg. Co.
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 weld joint are... [See More]
- Media: Air; Chemical; Hydraulic; Water; Hot Water; Cold Water ; Ground Water; Potable Water; Salt Water (optional feature); Gas; Gasoline / Diesel Fuel (optional feature); High Purity (optional feature); LP Gas (optional feature); Natural Gas (optional feature); Sour Gas (optional feature); Specialty Corrosive (optional feature); Steam; Liquids
- Maximum Pressure: 3000.00
- Valve Size: 0.38
- Primary Material: Aluminum (optional feature); Brass / Bronze; Stainless Steel; Steel; Exotic Metal; Alloy 20, Alloy C-276, Titanium
from Check-All Valve Mfg. Co.
The Universal Socket Weld check valve is machined from bar stock and designed for a minimum pressure drop. It carries rugged, dependable Check-All trim and there is a wide variety of seat materials and cracking pressures to choose from. This valve series is particularly attractive when weld joints... [See More]
- Media: Air; Chemical; Hydraulic; Water; Hot Water; Cold Water ; Ground Water; Potable Water; Salt Water (optional feature); Gas; Gasoline / Diesel Fuel (optional feature); High Purity (optional feature); LP Gas (optional feature); Natural Gas (optional feature); Sour Gas (optional feature); Specialty Corrosive (optional feature); Steam; Liquids
- Maximum Pressure: 5000.00
- Valve Size: 0.38
- Primary Material: Stainless Steel; Steel; Exotic Metal; Alloy 20, Alloy C-276, Titanium
from Check-All Valve Mfg. Co.
The Wafer Insert (WV) valve is designed to fit between two mating ANSI flanges. Two gaskets are required, instead of the one normally used. The "drop in" valve body fits inside the bolt circle for quick installation and removal in rigid piping applications where the use of the F1, F6, or FP are not... [See More]
- Media: Air; Chemical; Hydraulic; Water; Hot Water; Cold Water ; Ground Water; Potable Water; Salt Water (optional feature); Gas; Gasoline / Diesel Fuel (optional feature); High Purity (optional feature); LP Gas (optional feature); Natural Gas (optional feature); Sour Gas (optional feature); Specialty Corrosive (optional feature); Steam; Liquids
- Primary Material: Brass / Bronze; Stainless Steel; Steel; Exotic Metal; Alloy 20, Alloy C-276, Titanium
- Valve Size: 0.50