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Best Dual Check Valves

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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PumpSpy Dual Pump Install Kit - Double Sump Pump Connection, Basement Water Pump Backup Y-Connector - Sump Pump Submersible Backup Connector To Single Discharge Line - Dual Pump System To 1-1/2' Line

  • ...h this dual pump backup installer kit. Everything you need to connect a back up sump pump is in the box. There’s no need to purchase a PVC pipe, elbows, couplings and cement. Say goodbye to messy, laborious installations!.
  • WHAT’S IN THE BOX: This kit contains a Y-Connector, Two (2) 1-1/2″ Threaded Silent Check Valves, Stainless Steel Clamps and Buna-N Rubber Couplings. The only thing you’ll need to put everything together is a standard screwdriver. This kit is compatible with all pumps that have a standard 1-1/2″ NPT pump discharge/output..
  • HOW TO INSTALL: Simply screw the check valves into both pumps, drop the Y-connector into the check valve boots, attach the rubber boot to the top of the Y-connector and then to your existing discharge line. Tighten all the stainless steel clamps with a screwdriver and you’re done. It’s that easy!.
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Elitech DMG-3B AC Manifold Gauge Set 2 Way with Hoses Coupler Adapters+ Carrying Case

  • PROFESSIONAL DESIGN: Digital display with 2-way valves for more than 87 refrigerants, including R134A R22 and R410A. Designed for AC charging, diagnostic check, and recovery work..
  • MULTIFUNCTIONAL DESIGN: High & low pressure measurement, dual temperature test, digital display, multi-unit switching, multi-mode function, and built-in refrigerant database..
  • SET PACKED: Includes three 4.1 feet hoses, one dual-purpose valve wrench, one corkscrew, and one hook..
  • HIGH ACCURACY: High-quality dual-table valve with an imported pressure sensor, excellent workmanship, stable performance, Large screen, display data clearly..
  • LONG BATTERY LIFE: Powered by 3AAA batteries, lasts up to 6 months..
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uxcell Nickel-Plated Copper One Way Air Check Valve G 1/4 Female Threaded Full Port Check Valve 2Pcs

  • Function: the check valves are applicable for fluid systems to prevent countercurrent liquids, or for pneumatic systems to prevent reverse flow of compressed air.
  • Material and size: the one way check valves are made of PVDF, sturdy, wear-resistant and durable for long-term use.
  • Each check valve measures 6.3 mm/ 1/4 inches, the total length is 38 mm/ 1.50 inches.
  • Features: the pipe port of the check valve is designed with a pagoda-shaped card slot, non-slip and non-toxic, with good airtightness and good adsorption performance.
  • Easy to install: the non-return check valve is easy to install, convenient for you to unscrew and replace.
  • Application: the non-return check valves are widely applied for automotive parts, machinery industry, household appliances, agriculture, etc..
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Elitech DMG-3 AC Manifold Gauge Refrigerant Pressure Gauge Set 2 Way with Hoses

  • PROFESSIONAL DESIGN: Digital display with 2-way valves for more than 87 refrigerants, including R134A R22 and R410A. Designed for AC charging, diagnostic check, and recovery work..
  • MULTIFUNCTIONAL DESIGN: High & low pressure measurement, dual temperature test, digital display, multi-unit switching, multi-mode function, and built-in refrigerant database..
  • SET PACKED: Includes two quick couplers, convenient for auto air conditioner maintenance, three 4.1 feet hoses, one dual-purpose valve wrench, one corkscrew, and one hook..
  • HIGH ACCURACY: High-quality dual-table valve with an imported pressure sensor, excellent workmanship, stable performance, Large screen, display data clearly..
  • LONG BATTERY LIFE: Powered by 3AAA batteries, lasts up to 6 months..
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PVC True Union Check Valve 1’’ Slip Swing Full Port Utility Check Valve Sch80 Socket Pool Ball Check Valve for Backflow Prevention

  • 【PVC Ball Check Valve】Schedule 80 PVC ball check valves have a spherical ball inside the valve body which works as a check to allow flow in one direction and close off to prevent back-flow..
  • 【INSTALLATION TIP】PVC union check valves are designed for VERTICAL installations, MUST be used in an upflow position to work properly. Check valves MUST be installed with the valve's flow arrow pointing in the direction of the flow. Do not install valve upside down.（NOTE: NO SPRING).
  • 【PVC Union Check Valve】True union check valve, can be taken apart for cleaning, allows for easy removal without breaking down the piping connection..
  • 【Material】1'' Slip check valve made of PVC material, O-ring with EPDM material, low-temperature-resistant, impact-resistance, ultraviolet-resistance, rust-resistance. Fits for Schedule 80 1 Inch Pipe..
  • 【Application】PVC Swing Check Valve 1’’(DN25) - Non-return or "one way" valve is ideal for flow control, such as commercial plumbing, aquariums, irrigation, swimming pools, water parks and OEM applications..
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AQUANEAT Powerful Aquarium Air Pump, 250GPH, Dual Outlets, for up to 300 Gallon Fish Tank, Super Quiet Oxygen Aerator with Gang Valves, Adjustable Hydroponic Air Bubbler Pump

  • Ultra Silent: Dual housing structure for sound insulation.
  • 4 rubber feet attached to the bottom to minimize vibration..
  • capable of producing sufficient air to run multiple air stones, sponge filters, bubble bars, air discs, an under gravel system or hydroponic growing system..
  • Adjustable Air Flow: An easy-to-access control knob on the cord..
  • Dimension: 6 x 5.5 x 4 inches (L x W x H).
  • the quietness and the power make it a perfect choice for large tanks, multiple aquariums, and living room fish tank.（Note: This air pump is much more powerful than regular air pumps, and some ordinary check valves can’t stand the air flow and make whistling sound. In this case, you can remove the check valve and place the air pump higher than the water level.).
  • Package includes: 1 x Air Pump, 2 x 2-outlet Gang Valves (easy to individually adjust air flow to different tanks.).
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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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Ultimate Washer Replacement for General Pump Check Valves KIT001 Kit 1 New Valves + O-Rings

  • Replacement for General Pump Check Valves Kit - Kit 1, Valves and O-Rings (K01).
  • Complete Valve Kit Includes Six O-rings and Six Check Valves Complete.
  • High Quality Material for Best Performance.
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Stainless Steel SS316 NPT 2 Swing Check Valve WOG 200 PSI PN16 CF8M

  • Body Material:Stainless Steel 316,200PSI/PN16,ANSI B1.20.1.
  • Working Pressure 200 WOG,Port Types:Female x Female threaded.
  • Temperature range: -60 to 450 degree Fahrenheit,Suitable for full range of liquids and gas.
  • Check valves are used to help direct flow in one direction. The stainless steel bodies and PTFE seals are highly corrosion resistant allowing these check valves to be used with a wide variety of fluids including, but not limited to water, oil, gas, air, light alkali's, acids, biodiesel, fuels and alcohols..
  • Swing check valves are for horizontal use only. When fluid pushes on the stopper in the correct direction, it will "swing" open to allow flow. If flow moves in the opposite direction, it will swing shut. The check valve cannot be used in vertical applications as gravity may affect the function of the swinging motion..
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AQUANEAT Aquarium Airline Tubing, Standard 3/16\ Tubing, Air Pump Accessories,with Air Stones, Air Pump Valves, Suction Cups and Connectors (Clear, 14Feet)

  • Package Includes：14feet clear tubing,2pcs 1" air stones,2pcs check valves,2pcs clear T connectors,6pcs clear suction cups.
  • Airline tubing: standard 3/16" diameter common to most airline accessories.
  • Air stones: durable and can produce fine bubbles continuously to diffuse oxygen efficiently in your fish tank.
  • Check valves: place these air pump check valves in your airline tubing between your air pump and aquarium water to prevent water returning down the air line.
  • Suction cups and T connectors: fit 3/16 inch ID standard airline tubing.
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AQUANEAT Aquarium Check Valve One Way Non Return Valve for Aquarium Air Pump,10pcs Red

  • Specially designed non-return valves will protect your air pump by preventing aquarium water from back siphoning during a power outage.
  • They are made of plastic material for long time use.
  • Place these air pump check valves in your airline tubing between your air pump and aquarium water to prevent water returning down the air line.
  • Fits standard aquarium airline tubing with inner diameter about 4mm.
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Mueller Industries 109-814 Float Valves, 0.75 Inch

  • Dual inlet thread for connecting pipe and locknut.
  • Machined flange for support against tank wall.
  • Dual inlet thread for connecting pipe and locknut, high tensile serrated arms, locknut included with male inlet valves.
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