NON RETURN VALVE (SWING TYPE) CLASS-150#, 300#, 600#, 900#, 1500# & 2500#

Technical Detail

  • Manufacturing Std : BS:1868
  • Testing & Inspection Std : API:598 / BS:6755 (Part-I)
  • Face to Face : ANSI B 16.10
  • End Connection : Flanged ends as per ANSI B 16.5 & 26” and above ANSI B 16.47 Series A & B
  • Butt Weld Ends : As per ANSI B 16.25
  • Shell wall Thickness : ANSI B 16.34

Special Features

  • With Stelliting
  • With IBR Certification
  • With Nace MR 0175

Material Detail

Part No. Part Name WCB WC6 WC9 C5 C12 LCB LCC CF8 CF8M
01 Body A 216 WCB A 217 WC6 A 217 WC9 A 217 C5 A 217 C12 A 352 LCB A 352 LCC A 351 CF8 A 351 CF8M
02 Cover A 216 WCB A 217 WC6 A 217 WC9 A 217 C5 A 217 C12 A 352 LCB A 352 LCC A 351 CF8 A 351 CF8M
03 Disc ASTM A 216 Gr. WCB + 13% Cr. Facing
04 Seat Ring A105 A 182 F11 A 182 F22 A 182F5 A 182 F9 A 350 LF2 A 350 LF2 Integral
05 Hinge Pin AISI 410(13% Cr.)
06 Disc Hinge ASTM A 216 Gr. WCB ASTM A 351 Gr. CF8 / CF8M
07 Cover Gasket S.S.304 / S.S.316 Spiral Wound Gasket with Graphoil Filler PTFE
08 Cover Stud & Nuts ASTM A 193 Gr. B7 / ASTM A 194 Gr. 2H A 193 B16,A194 Gr.4/7

Also Avaliable

  • Casting in WCC.LCC,CF3,CF8C,CN7M, Hastalloy, Monel also Provided against Requirement
  • Trim Material
  • Special Features Like Stelliting

Wafer Type Check Valve

Design & Testing Standard

  • Design & Mfg. Standard :API:6D, API:594
  • Testing Standard : API:598
  • Leakage Class : Class VI (Zero Leakage)
  • Face to Face : API:594
  • Mounting Between : ANSI B 16.5 / BS 10 Table / DN / IS

Design Features

  • Body Type single Thin Plate, Short Type
  • Suitable For Horizontal and Vertical Mounting
  • Shorter overall length, mounting requires minimum space
  • Low pressure Drop
  • Easy to install
  • Less weight
  • Size Range: 1”to 42”
  • Pressure Rating : PN-10/PN-16
  • Seat Leakage : Zero Leakage, Tight Shut Off
  • Temperature Range : 25°C to + 200°C
  • Offer any 3rd Party o Client Inspection

Material Detail

Part No. Part Name Material
01 Body Cast Iron (IS:210 Gr. Fg. 220) / Cast Steel (ASTM A 216 Gr. WCB), S.S. ASTM A 351 Gr. CF8 / CF8M
02 Disc Cast Iron (IS:210 Gr. Fg. 220) / Cast Steel (ASTM A 216 Gr. WCB), S.S. ASTM A 351 Gr. CF8 / CF8M
03 ‘O’Ring Nitrile/EPDM/Viton/Silicon/PTFE
04 Hinge Pin AISI 304 / AISI 316
Primary Service Rating & Test Pressure
Class Working Temperature Hyd. Test pressure
Body Seat
150 20°C to 180°C 225 PSIG 150 PSIG

Non Slam Check Valve(DCV 3)

Design & Testing Standard

  • Testing & Inspection Standard : API:598 / BS:5146
  • Piping Standard : BS:10 Table E & H,PN-16,PN-25 & PN-40

Features

  • Spring Closing arrangement for the prevention of reverse flow in pipe lines
  • These Valves are general purpose valves that are stronger, lighter and smaller than conventional swing check valve and there before, less expensive to install and maintain
  • Suitable for higher pressure / temperature (up to 400°C)
  • It can be Mounted in any plane / direction
  • Extremely low opening pressure
  • Available Sizes 15mm to 150mm suitable for PN6 / PN-40 and ANSI 150/300
  • Weight and dimensions are same for class 150 & class 300 Valves
  • Valve are Self centering type
  • zero leakage for soft seated valves.
  • The maximum permissible leakage rate shall be 3 cubic centimeter per minute per inch of nominal pipe size for metal seated valves
  • Design as per Manufacturing Standard
  • Testing : as per API:598

Material of Construction

  • Body : CF8 / CF8M / F304 / F316 / F304L / F316L
  • Disc : CF8 / CF8M / F304 / F316 / F304L / F316L
  • Spring : Standard Spring
  • Seat : Metal to Metal Seated Construction

Pressure & Temperature Rating

  • Tested as per API-598
  • Maximum Body Design PN-40
  • Maximum operating Pressure 40 Kg/Cm²
  • Maximum operating Temperature 300°C
  • Maximum Cold Hydraulic Test Pressure 60Kg/Cm²
  • Maximum Operating Temperature 50°C

Material Detail

Part No. Part Name CF8 CF8M F304 F316 F304L F316L
01 Body ASTM A 351 Gr. CF8 A 351 CF8M ASTM A 182 Gr. F304 ASTM A 182 Gr. F316 ASTM A 182 Gr. F304L ASTM A 182 Gr. F316L
02 Disc ASTM A 351 Gr. CF8 A 351 CF8M ASTM A 182 Gr. F304 ASTM A 182 Gr. F316 ASTM A 182 Gr. F304L ASTM A 182 Gr. F316L
03 Seat Ring S.S.304 / S.S.316 (Inconal)
04 Spring Washer AISI 304 / AISI 316
Primary Service Rating & Test Pressure
Class Working Pressure Hydraulic Test Pressure
Body Seat Temp.
PN 40 40 Kg/Cm² 77 Kg/Cm² 56 Kg/Cm² 300°C

Dual Plate Check Valve

Technical Detail

  • Manufacturing Std : API:594 / API 6D
  • Testing & Inspection Std: API:598
  • Face to Face : API:594

Salient Features :

  • No water hammer and slamming
  • Compact and structurally sound design
  • Can be installed horizontally, vertically or in an incline
  • Low pressure drop and reduced energy loss irrespective of pressure ratings
  • Efficient and positive sealing under most flow and pressure conditions
  • Easy to maintain, long life and trouble free operation

Technical Features :

  • Twin plate, flat seat design for efficient sealing
  • Long Leg spring(s) allows the plates to open and close without seat scrubbing
  • Valves with 350 mm and larger are fitted with independent spring(s) as a standard feature
  • Lower head loss than swing check valves above 150 mm
  • Valves with soft seats have bubble tight closure to API 6D
  • Simplicity of Installation is a key feature

Features

The Dual plate check valve is an all purpose non return valve that is much stronger, lighter in weight and smaller in size compared to a conventional swing check valve or lift check valve The Dual plate check valve design is the result of attempts to solve the problems associated with swing check valve and lift check valve. The dual plate check valve employs two spring loaded plates hinged on a central hinge pin. when the flow decrease, the plates close by torsion spring action without requiring reverse flow. This design offers the twin advantage of No water hammer and non slam simultaneously. All features put together make the dual plate check valve one of the most effective design. The valve Design conforms to API 594 as well as API 6D Except face to face dimension of ANSI 125 Cast Iron Valves of Size 65mm (2 ½”) to (12”). Valve Inspection and testing Conforms to API:598 Dual Plate Check Valve are available in wafer design, flanged wafer design and extended design with flanged ends having face to face dimension as that of a swing check valve

Material Detail

Part No. Part Name Material
01 Body Cast Iron (IS:210 Gr. Fg. 220) / ASTM A 216 Gr. WCB
02 Disc ASTM A 351 Gr. CF8 / CF8M / G.M
03 Hinge Pin AISI 304 / AISI 316
04 Plug AISI 304 / AISI 316
05 Stop Pin AISI 304 / AISI 316
06 Spring AISI 304 / AISI 316 / Inconnel
07 Bearing AISI 304 / AISI 316