Best Automatic Control Check Valves

International Door Closers Model 312 with

  • 90 Degree Backstop (HO) Hold Open - Multi-sized closer w/Adjustable Spring Power for range of sizes.
  • Adjustable OHC from 8.5lbs of Opening Force to medium spring tension..
  • Adjustable after installation. Closing and Latching speeds controlled by separate regulating valves..
  • ADA (Handicap) with 8.5 lb opening force for use on center pivoted installations - UL Listed.
  • Stable hydraulic door check fluid for any climate. Two Speed Control Valves fully adjustable..
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International Door Closers Model 312 with

  • 90 Degree Backstop (HO) Hold Open - Multi-sized closer w/Adjustable Spring Power for range of sizes.
  • Adjustable OHC from 8.5lbs of Opening Force to medium spring tension..
  • Adjustable after installation. Closing and Latching speeds controlled by separate regulating valves..
  • ADA (Handicap) with 8.5 lb opening force for use on center pivoted installations - UL Listed.
  • Stable hydraulic door check fluid for any climate. Two Speed Control Valves fully adjustable..
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International Door Closers Model 311 with

  • 105 Degree Backstop No Hold-Open - Multi-sized closer w/Adjustable Spring Power for range of sizes.
  • Adjustable OHC from 8.5lbs of Opening Force to medium spring tension..
  • Adjustable after installation. Closing and Latching speeds controlled by separate regulating valves..
  • ADA (Handicap) with 8.5 lb opening force for use on center pivoted installations - UL Listed.
  • Stable hydraulic door check fluid for any climate. Two Speed Control Valves fully adjustable..
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Victor 0382-0093 315FC 300 Series \VanGuard\ Heavy Duty Torch Handle, 9\ Length

  • Gas Service: Works with all fuel gases (pressure restrictions for different gases).
  • Built in flashback arrestors with no need for accessory flash arrestors.
  • Built in reverse flow check valves with no need for accessory check valves.
  • Features Victor traditional threaded assemblies for economical repair if service is necessary.
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Honeywell VR8300A3500/U Single Stage Standing Pilot Gas Valve, Standard Opening, 24 Vac, 5-3/8' Height, 4-1/16' Width, 2-11/16' Length

  • Control includes safety shutoff, manual valve, two automatic operators, pressure regulator and pilot adjustment.
  • Solenoid operated first automatic valve opens on thermostat call for heat, closes when call for heat ends.
  • Meets codes requiring dual safety shut-off.
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Pawfly 3-Way Aquarium Air Flow Control Lever Valve Distributor Splitter Pump Accessories Set with 3 Check Valves & 4 Suction Cups

  • Manually control the flow of vital O2 or switch an air pump "on or off"..
  • Made of Chromium Copper material, air will never leak out. INLET DIA: 3/16", OUTLET DIA: 3/16"..
  • Non-Return Check Valves protect you air pump by preventing aquarium water from back siphoning during a power outage..
  • Suction Cups fit the Air Valve Distributor and standard tube well, sticking to the tank firmly..
  • Package Content: 1 x 3-Way Air Distributors, 3 x Non-Return Check Valves, 4 Suction Cups.
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Little Giant 14942771 Cast Iron Sump Pump System with 10-Foot Power Cord

  • Pre-assembled piping and check valves included.
  • 1-1/2 inch FNPT discharges, piggyback float switches.
  • Clog-resistant design (1/2" semi-solids handling), PSC motors, not suitable for pond use.
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Honeywell VR8300A3500/U Single Stage Standing Pilot Gas Valve, Standard Opening, 24 Vac, 5-3/8' Height, 4-1/16' Width, 2-11/16' Length (Renewed)

  • Control includes safety shutoff, manual valve, two automatic operators, pressure regulator and pilot adjustment.
  • Solenoid operated first automatic valve opens on thermostat call for heat, closes when call for heat ends.
  • Meets codes requiring dual safety shut-off.
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JIH Aquarium Air Pump Accessories Set -25 Feet Airline Tubing Standard, Air Stones,Check Valves, Suction Cups and Connectors,Clear

  • 25ft. Airline Tubing : 3/16 Standard ID Flexible material. 4 Control Valves.
  • 4 Bubble Release Air Stone : approx. 0.6'' x 1'', Durable to produce lots of tiny bubbles continuously to diffuse oxygen efficiently in your fish tank..
  • 12 SUCTION CUPS：Excellent 3/16 inch inner diameter airline tube holder suction cups will stick tightly to the smooth fish tank..
  • 4 CHECK VALVES:Put the check valve in the airline tube between air pump and aquarium water to prevent water from back siphoning..
  • 12 Connections (Straight & T ) : T connectors can combine two inputs to create one stronger output.
  • Straight connectors apply for mending or extending air hose..
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