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Wenzhou Goldtop Valve Co.LTD
Gold top valve located in Oubei Town, Wenzhou, China,where can make all kinds of precision balls,including top entry,metal seat and V type balls.On this base,our products range of floating,trunnion
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Dual Plate Wafer Spring Loaded Disc Check Valve

Wenzhou Goldtop Valve Co.LTD

Dual Plate Wafer Spring Loaded Disc Check Valve

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Brand Name : GOLD TOP

Certification : API 6D

Place of Origin : 中国

MOQ : 1pcs

Price : Price to be negotiated in person

Supply Ability : 100+pcs+30days

Delivery Time : 30days

Packaging Details : Plywood Case

Size : 2"~48"

End Connection : RF / RTJ / BW

Inspection & Testing : API598

Pressure Range : 150 #~2500#

Type : Dual Wafer

Design : API6D

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Flanged Dual- Plate Wafer Check Valve
Product Details:
Dual-plate check valves are bonnetless and mounted between pipe flanges (wafer style). In this case, the valve includes two spring loaded half-moon shaped discs that rotate about their shaft. The actual designs of these valves vary between design models and manufacturers. Most have multiple flat seats. The dual-plate check valve disc has short rotational disc travel and responds quickly to flow stoppage or reversal, thus the potential for moderate water hammer does exist. It is somewhat better than the swing check valve at minimizing potential water hammer, but with a much higher pressure drop.
Depending on the design, maintenance effort ranges from relatively simple to difficult. All dual-plate check valves must be removed from the line to perform maintenance due to the bonnetless design. The dual-plate check valve also results in a higher pressure drop when compared to a tilting disc check valve of the same size.
Although most of the wafer check valves are installed between two flanges, and no need to be flanged type, some other applications may need flanged type wafer check valve for better alignment of valves. The flanged valve body could be cast or forged upon customer’s requirement.
Features of Flanged Dual-plate Wafer Check Valves:
  • One Piece Body Design
  • Short Face-to-face
  • Inline Double Plate
  • Spring-loaded Disc for Quick Closure
  • Flanged Wafer End
Applicable Standards of Flanged Dual-plate Wafer Check Valves:
a) Design&Manufacture: API 6D, API 594
b) Face to Face: API 6D, ASME B16.10, EN 558
c) Connection End: ASME B16.5, EN 1092, JIS B2220
d) Test and Inspection: API 6D, EN 12266, API 598
Sizes: 2″ – 48″ or DN50 – DN1200
Pressure Rating: Class150 – Class1500 or PN16 – PN250
Material of Valve Body: WCB, LCB, WC6, WC9, C12, C5, CF8, CF3, CF3M, CF8M, etc.

Standard Material List

No.
Part Name
Material
No.
Part Name
Material
1
Body
ASTM A216-WCB
5
Washer
ASTM A182-F316
2
Plug
Steel
6
Hook Screw
Steel
3
Stop Pin
ASTM A182-F316
7
Spring
ASTM A276-316
4
Hinge Pin
ASTM A182-F316
8
Plate Disc
ASTM A351-CF8M

Design and Manufacturing Standards:
Basic Design:API 6D / API 594
Face to Face Dimension:API 6D / ANSI B16.10
Pipe Flange standard:ANSI B16.5
Inspection & Testing to:API 6D / API 598

Pressure Class and Size Range:
ANSI Class
Nominal Size
150
2" to 20"
300
2" to 16"
600
2" to 10"
Flanged Dual- Plate Wafer Check Valve


Product Tags:

dual plate check valve

      

wafer lug type check valve

      
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