Refer Swing Check Valve Sizes and Dimensions

Check valve

Leading supplier and exporter of pilot operated check valve in 10000 PSI rating

Check valve is basically a type of direction control valve which primarily used to control the direction of the fluid in hydraulic system. It is a unidirectional valve it only allows liquid to flow in one direction. Fit-lok is trusted Check valve manufacturer in India in size range of 1/2″ to 2″. We don’t compromise in terms of quality of material while manufacturing Swing Check Valve, Raw material is sourced from trusted and certified suppliers.

Pilot operated check valve inexpensive and easy solution for the potential issue which media backflow can cause. Backflow of media can cause contamination of upstream media, it can cause damage to equipment, it could increase a maintenance costs and system inefficiency.

Flow of media in Hydraulic check valve remain steady as long as the pressure is sufficient to keep the disc open, once the pressure drops, the disc automatically returns to its seat, which shut off the flow. The pressure required to open the high pressure check valve is known as cracking pressure which typically ranges between 3 psi to 350 psi depending on the size of valve. These valves create a tight seals to prevent any leaks.

Female X Female Check Valve has threads on both the ends. These valve can withstand pressure upto 15000 PSI. We are one of the leading double check valve supplier in India and can supply it to countries like Nigeria, UAE and South Africa. We keep ready stock of female non return valve in pressure range of 3000 PSI to 20000 PSI. These valves are tested using various destructive and non destructive methods to ensure the quality of products.

Hydraulic check valve can withstand temperatures from -25 °C to 200 °C

Check valve Specification

Size Range
  • 1/8″ TO 2″
  • 6 MM TO 50 MM
Connection
  • Socket Weld End
  • Tube End
  • Flange End
  • Threaded
Threads
  • BSPP
  • METRIC
  • BSPT
  • NPT
  • UNF
  • JIC
Body Shape Hexagon
Pattern Flow Straight
Orifice Size 2 MM – 40 MM
Equivalent Brands
  • Parker
  • Hamlet
  • Dk-lok
  • Stauff
  • Hoke
  • Swagelok
  • Oliver Valves
Pressure Rating
  • 3000 PSI
  • 6000 PSI
  • 10000 PSI
  • 15000 PSI
  • 20000 PSI
Cracking Pressure 0.5 BAR
Type
  • Spring Type
  • Poppet Type
Media
  • Sea Water
  • Gas
  • Cold Water
  • Hydraulic Air
  • Oil
  • Chemical
  • Water
  • Hot Water
  • Steam
Body Type Forged, Bar Stock
Packing Details
  • Wooden Pallet
  • Box Packing

Different types of Non return valve

Hydraulic Check Valve

Hydraulic Check Valve

Inline Check Valve

Inline Check Valve

Nrv Valve

Nrv Valve

Instrument Air Check Valve

Instrument Air Check Valve

Non Return Valve

Non Return Valve

Spring Check Valve

Spring Check Valve

Instrumentation Check Valve

Instrumentation Check Valve

Poppet Check Valve

Poppet Check Valve

Instrument Control Valve

Instrument Control Valve

Get updated price list of high pressure check valve

Check valve price list

Price of Hydraulic check valve vary between 15$ to 150$ per piece based on size, material, pressure rating, design and flow rate. For updated price list of Instrument Control Check Valve you can contact us on sales@fit-lok.com

Check valve cracking pressure

Types Cracking Pressure
Poppet Check Valves 1/3 to 25 psig
One-Piece Check Valves 1/3 to 25 psig
Lift Check Valves 3 to 600 psig

Hydraulic check valve symbols

Hydraulic check valve symbols

Buy Female X Female Check Valve at factory price from stockist in Mumbai

Pressure and Temperature rating of Female X Female Check Valve

Material 316 SS Brass
Temperature, °F (°C) Working Pressure, psig (bar)
–10 (–23) to 100 (37) 2000 (137) 1500 (103)
200 (93) 1715 (118) 1300 (89.5)
250 (121) 1630 (112) 1200 (82.6)
300 (148) 1545 (106)
375 (190) 1450 (99.9)

Dimensions of Pneumatic check valve

Dimensions of Pneumatic check valve

End Connections Dimensions, in. (mm)
Inlet/Outlet Size A B C
Fractional tube fittings 1/8 in. 2.14 (54.3) 5/8 7/16
1/4 in. 2.35 (59.7) 9/16
3/8 in. 3.17 (80.5) 7/8 11/16
1/2 in. 3.42 (86.9) 7/8
3/4 in. 4.32 (110) 1 1/4 1 1/8
1 in. 4.74 (120) 1 3/8 1 1/2
Metric tube fittings 6 mm 2.36 (59.9) 5/8 (14)
10 mm 3.32 (84.3) 7/8 (19)
12 mm 3.42 (86.9) (22)
Female NPT 1/8 in. 1.89 (48.0) 5/8
1/4 in. 2.15 (54.6) 3/4
3/8 in. 2.98 (75.7) 7/8
1/2 in. 3.58 (90.9) 1 1/16
3/4 in. 4.08 (104) 1 1/4
1 in. 4.84 (123) 1 5/8
Male NPT 1/8 in. 1.71 (43.4) 5/8
1/4 in. 2.09 (53.1)
3/8 in. 2.78 (70.6) 7/8
1/2 in. 3.16 (80.3)
3/4 in. 4.08 (104) 1 1/4
1 in. 4.52 (115) 1 5/8
Male NPT/ tube fitting 1/4 in. 2.22 (56.4) 5/8 9/16
Male VCR fittings 1/4 in. 2.21 (56.1) 5/8
1/2 in. 3.56 (90.4) 15/16
3/4 in. 4.64 (118) 1 5/8
1 in. 4.76 (121)

Working Temperature of Check valves

Working Temperature -23°C to 190°C

Flow type and recommendation of check valve

Type Flow Recommended Check Valve Media Type Velocity Range FPS(m/s)
Uniform With Insignificant Reversal Swing Check w/ Lever and ctrl wt. Water Or Oil 1 to 6 (0.3 to 2)
Simple Swing Steam, Water, Gas 7 to 100 (2 to 30)
Pulsating In-line Guided Disc w/Cushion Chamber Air Or Gas 5 to 10 Max (a.5 to 3)
Uniform In-line Guided Disc Water Or Oil 5 to 10 Max (a.5 to 3)
Uniform With Severe Reversal Swing w/ Dashpot Water Or Oil 7 to 10 (2 to 3)
Uniform With Normal Reversal Swing w/ Spring Assist To Close Water Or Oil 7 to 10 (2 to 3)
Uniform Or Pulsating (Severe Revesal) Tee- Pattern Lift w/ Dashpot Steam, Water, Or Gas 10 to 160 (3 to 50)
Uniform Or Pulsating Tee- Or Inclined- Pattern Lift Steam, Water, Or Gas 8 to 160 (2.5 to 50)
Uniform Or Pulsating Wye-Pattern Lift Steam, Water, Or Gas Or Oil 20 to 250 (6 to 75)
Uniform Tilting Disc Steam, Water, Or Gas 12 to 250 (4 to 75)

Manufacturing standards of female threaded check valve

  • ASME B16.10
  • BS 1868
  • ASME B16.5
  • API 6D / API 598
  • MSS SP-55
  • ASME B16.34
  • MSS SP-25

Inline check valve functions

  • Preventing Backflow
  • Maintaining System Pressure
  • Protecting Pumps and Equipment
  • Maintaining Fluid Quality
  • Preventing Water Hammer
  • Flow Direction Control
  • Ensuring Process Efficiency
  • Preventing Damage from Flow Loss

Diagram of Poppet check valve

Diagram of Poppet check valve

Applications of compressor check valve

  • Refineries
  • Food and Beverage Industry
  • Water Treatment Plants
  • Marine Applications
  • Chemical Processing
  • Oil & Gas Industry
  • Power Generation
  • Pulp and Paper Industry

How to select right Air compressor check valve

  • Material Selection
  • Performance Requirements
  • Type and Size
  • Maintenance
  • Cracking pressure
  • Flow direction
  • Fluid density

Can non return valve stop water hammer?

Water hammer can be avoided by employing check valves that close rapidly, thus avoiding pressure surges and shock waves. Silent check valves are one of the effective solutions to this problem.

Advantages and Disadvantages of Compressor check valve

Advantages

  • Prevent backflow
  • Self-actuated
  • Prevent water hammer
  • Reduce sudden valve failure
  • Lower maintenance costs
  • Few moving parts
  • Smaller footprint
  • Do not require power to operate

Disadvantages

  • Do not operate in pulsating systems
  • Noise from slamming discs
  • Reverse flow problems
  • Operate in a completely enclosed system
  • Internal parts cannot be checked