Wafer Type Dual Disc Check Valve
Wafer Type Dual Disc Check Valve
Clamping double-flap check valve adopts the clamping type, the butterfly plate is two semicircles, and the spring forced reset, the sealing surface can be the body surfacing wear-resistant materials or rubber lining, the use of a wide range of reliable sealing.
Technical Specifications
Materials:
Body:
Cast Steel：
ASTM A216 WCB, WCC | ASTM A352 Gr. LC3, LCB | ASTM A217 gr.B, C5, C12, WC6, WC9, WC12
Stainless Steel:
ASTM A351 CF8, CF3, CF8M, CF3M, CK20, CG8M, A351 CK3MCuN etc.
Duplex:
A890 Gr.4A, Gr. 6A (SAF2205, 2507 etc.)
Nickel Alloy:
Monel 400 | Inconel 600, 625 | Hastelloy C27, C22, B2 | Incoloy 800/800HT, 825 etc.
Ball:
ASTM A105 w/ENP | ASTM A350 Gr. LF2 w/ENP | ASTM A182 Gr. F316 | ASTM A182 Gr. F316 w/ENP
Stainless Steel | Duplex SS | Nickel Alloy etc.
Seat:
RPTFE | Nylon | Davilon | PEEK | Tek-Fil® | TFM
Stem:
ASTM A479 Type 410 | 17-4PH | XM-19 | ASTM A182 F316 | Stainless Steel | Duplex SS | Nickel Alloy etc.
Caliber Range
1/2“ to 60” | DN15 to DN1500
Pressure Range
Class150 to 2500 | PN10 to PN420
Operating Temperature
-196℃ to 560℃ | -320.8℉ to 1040℉
Connection
RF | RTJ | BW
Design Standard
API 594 | API 6D | ASME B16.34 | GB/T 12236
Temperature Range
-60℃ to 200℃ | -76℉ to 392℉
Features And Benefits
Two plates are fixed on the valve body along a pivot axis, and two springs are installed on the butterfly plate above the sealing surface. under the pressure of medium flow, the springs are pressurized, forcing the butterfly plate to open, and the springs force the valve to close when the medium flows backward. this kind of valves can be assembled on both horizontal and vertical pipeline.
Excellent Sealing Performance
Provides reliable sealing, prevents leakage, and adapts to a variety of working conditions.
Compact Size And Light Weight
Compact design and light weight, easy to install and maintain, suitable for places with limited space.
Wide Range Of Applications
Suitable for a wide range of industries to meet different fluid control needs.
Flexible Flap And Fast Closing
Flexible flap action and fast closing support improve operational efficiency and reduce valve closing time.
Low Closing Shock
The design effectively reduces the impact force during closing, minimizes vibration, and protects piping and equipment.
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