Wafer Dual Plate Retainerless Wafer Check Valve

Model NO.: FYV
Flow Direction: Bidirectional
Standard: ANSI
Application: Industrial Usage, Water Industrial Usage, Household Usage
Size: 2"~48"
Class: 150-900lb
End: RF, Rtj, Sw, Bw
Operation: Manual, Electric, Pneumatic, Gear
Trademark: FYV
Transport Package: Wooden etc
Specification: CE, SGS
Origin: China
HS Code: 8481804090
Product Details: Flanged Dual-plate Wafer Check Valve
Wafer Check Valve -> Flanged Dual-plate Wafer Check Valve
Dual-plate check valves are 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.

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.

The features of check valve

Bolted Bonnet; Swing and lift disc; Metallic seating surfaces.

Body and Bonnet Connection
The body and bonnet of Class150~Class900 check valves are usually with studs and nuts. And the body and bonnet of Class1500~Class2500 check valves are usually of pressurized seal design.

Seat
For carbon steel check valve, the seat is usually forged steel. The sealing surface of the seat is spray welded with hard alloy specified by the customer. Renewable threaded seat is used for NPS<10 check valves, and welded on seat can be also optional if being requested by the customer. Welded on seat is used for NPS>12 crbon steel gate valves. Forstainless steel check valve, integral seat is usually adopted, or to weld hard alloy directly integrally. Threaded or welded on seat is also optional for stainless steel check valve if being requested by the customer.

Our Advantages:
1. We Are Factory: FYV has 3 production bases and 1 foundry which located in Wenzhou, Shanghai and Lishui city of China. The Factory Size in Square Meters: 110, 000. FYV has over 600 staff members, more than 60 technical engineers, a digital process center and more than 350 sets of various middle and large equipments. The annual sales revenue reaches above $80 million US Dollars.
2. Regional Sales: We provide specialized sales service refers to different kind of region all over the world. Each sales team member is good at the local language and well experienced to the responsible market. For example: Russian, German, Spanish, Japanese, etc.
3. Low MOQ: Our factory owns the casting company by itself. We are always ready for providing the sample and producing some small orders, in order to meet the business well.
4. OEM Accepted: We can make the products with the client's demand standard or the custom requirement.
5. Complete Service: We are always ready to hear from you, be responding to your enquiry immediately. Our trade manager is always online for you.
6. Good Quality: We have strict quality control system and amounts of testing equipments for different kind of valve, such as size, pressure, working environment etc. We are winning the market reputation with the time goes by.
7. Quick Delivery: We have the large stock for some hot products.
8. Competitive Prices: We are the manufacturing company which not only has our own manufacturing workshop, but the casting company as well. We provide the straight factory price and service to our customer.
No . Part name Material
1 Body WCB\CF8\CF8M\CF3\CF3M
2 Plate WCB\CF8\CF8M\CF3\CF3M
3 Spring INCONEL\17-7PH
4 Valve shaft F6a\304\316\304L\316L\17-7PH
Main size and weight
Class150 Class300 Class600 Class900 Class1500
Size L D WT L D WT L D WT L D WT L D WT
inch mm mm kg mm mm kg mm mm kg mm mm kg mm mm kg
2 60 103 2 60 110 3 60 110 4 70 140 8 70 140 8
21/2 67 122 3 67 128 4 67 128 5 83 162 11 83 162 11
3 73 135 4 73 147 6 73 147 8 83 165 14 83 172 19
4 73 173 6 73 179 8 79 191 11 102 204 20 102 207 26
5 86 195 8 86 214 15 105 239 20 110 245 30 110 252 51
6 98 220 13 98 249 18 136 264 26 159 286 42 159 280 68
8 127 277 25 127 305 31 165 318 55 206 356 84 206 350 130
10 146 337 39 146 359 51 213 398 95 241 432 145 248 433 210
12 181 407 54 181 420 77 229 455 140 292 495 220 305 518 384
14 184 448 80 222 483 117 273 490 223 356 518 350 356 576 550
16 191 512 117 232 537 190 305 562 360 384 572 470 384 639 635
18 203 547 138 264 594 200 362 610 395 451 635 605 - - -
20 219 604 163 292 652 265 368 680 518 451 695 820 - - -
24 222 715 331 318 772 410 438 786 836 495 835 1050 - - -
28 305 773 380 - - - - - - - - - - - -
30 305 824 425 368 882 660 - - - - - - - - -
32 305 878 560 - - - - - - - - - - - -

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