check valve seal

duo check valve

gas gate valve

oil check valve

pan check valve

CF3M Wafer Dual Plate Check Valve

CF3M Wafer Dual Plate Check Valve

Pressure Rating PN16 (Equivalent to Class 150)
Nominal Size DN50 – DN600 (NPS 2″ – 24″) Specify as required
End Connection Wafer Type / Lug Type Select as required
Face to Face Dimension API 594 / EN 558 Series 20
Sealing Type Metal-to-Metal Hard Seal

Dual Plate Wafer Check Valve Technical Data Sheet

  1. General Specifications

Item

Spesifikasi

Jenis Injap

Wafer Dual Plate Check Valve

Penilaian Tekanan

PN16 (Equivalent to Class 150)

Saiz Nominal

DN50 – DN600 (NPS 2″ – 24″) Specify as required

End Connection

Wafer Type / Lug Type Select as required

Face to Face Dimension

API 594 / EN 558 Series 20

Sealing Type

Metal-to-Metal Hard Seal

Medium

Water, Oil, Gas, and Corrosive Media (Compatible with CF3M)

Operating Temperature

-29°C to +425°C (-20°F to +800°F)

Bahan Badan

ASTM A351 Grade CF3M (Equivalent to 316L Stainless Steel)

Disc (Plate) Material

ASTM A351 Grade CF3M (Equivalent to 316L Stainless Steel)

Shaft / Hinge Pin Material

ASTM A276 Type 316 / 316L Stainless Steel

Seat / Sealing Surface

Hard Facing (Stellite / Cobalt-based Alloy) on Body

  1. Bill of Materials (ASTM Standards)

Part Name

bahan

Material Grade / Specification

ASTM Standard

Badan

Austenitic Stainless Steel

CF3M

ASTM A351

Discs (Dual Plate)

Austenitic Stainless Steel

CF3M

ASTM A351

Shaft / Hinge Pin

Precipitation Hardening / SS

17-4PH / 316 SS

ASTM A564 / A276

Seat Ring (Integral)

Hardfaced Alloy

Stellite (or equivalent)

Spring (Torsion)

High-Temperature Alloy

Inconel X-750 / 17-7PH

ASTM A638 / A693

Locating Dowel Pin

Stainless Steel

Type 316

ASTM F593

Gasket / O-Ring (Opt.)

Flexible Graphite / Viton

  1. Technical Parameters & Performance

Item

Unit

Value / Description

Pressure Testing

 

API 598 / ASME B16.34

– Shell Hydrostatic Test

psi (MPa)

1.5 x PN (Appx. 348 psi / 2.4 MPa)

– High Pressure Seat Test

psi (MPa)

1.1 x PN (Appx. 255 psi / 1.76 MPa)

– Low Pressure Pneumatic Test

psi (MPa)

80 psi (0.6 MPa)

Operational Limits

   

– Max. Flow Velocity

ft/s (m/s)

Water: ≤ 16 ft/s (5 m/s); Gas: ≤ 164 ft/s (50 m/s)

– Closure Pressure

 

Backpressure prevents reverse flow. (Seat Leakage: Per API 598 / ISO 5208 Rate D for Metal Seats)

Disc Action

 

Spring-assisted automatic closure. Recommended installation on horizontal lines with shaft vertical, or vertical lines with upward flow.

  1. Dimensions & Connection Data (Wafer Type, Units: mm / inches)

Note: Dimensions are for reference. Please refer to the specific manufacturer’s drawing for exact fit.

Size DN (NPS)

Valve Length L (mm)

Flange Dia. D (mm)

Bolt Circle K (mm)

Recommended Bolts

Approx. Weight (kg)

50 (2″)

43

165

125

4 x M16

~2.5

80 (3″)

64

200

160

8 x M16

~5.0

100 (4″)

64

220

180

8 x M16

~7.5

150 (6″)

76

285

240

8 x M20

~14.0

200 (8″)

95

340

295

12 x M20

~25.0

250 (10″)

114

405

355

12 x M24

~38.0

300 (12″)

114

460

410

12 x M24

~55.0

350 (14″)

127

520

470

16 x M24

~75.0

400 (16″)

140

580

525

16 x M27

~95.0

  1. Applicable Standards
  • Design & Manufacture: API 594, ASME B16.34
  • Bersemuka: API 594, ISO 5752 Series 20
  • Flange Dimensions: ASME B16.5 (for Class 150), ASME B16.47
  • Pressure Testing: API 598, ISO 5208
  • Material (Body/Disc): ASTM A351 Grade CF3M
  • Material (Other): ASTM A276, ASTM A564, etc.
  • Marking: MSS SP-25
  1. Teguran
  1. Material CharacteristicsASTM A351 CF3M is the cast equivalent of UNS S31603 (316L) . It features ultra-low carbon content, providing excellent resistance to intergranular corrosion after welding and in chloride environments.
  2. Metal Seated Feature: This valve features a Metal-to-Metal Hard Seal, making it suitable for high-temperature applications. The allowable leakage rate typically conforms to ISO 5208 Rate D(or API 598) for metal seats (a minute leakage is permissible; zero leakage is generally not guaranteed for standard metal seats).
  3. Flow Direction: A permanent flow directional arrow is cast or marked on the valve body. Installation must align with the pipeline flow direction.
  4. Installation Guidance: Best installed in horizontal pipelines with the shaft in a vertical position. For vertical installations, flow must be in the upward direction to allow the discs to open properly.

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