API Cast Steel Piston-Lift Check Valve
Basic Info
Model No.: H41H
Product Description
Model NO.: H41H Connection Form: Thread Pressure: Ordinary Pressure Sealing Form: Bellows Globe Valve Standard: DIN Size: Dn50-200mm Class: 150lb-1500lb Trademark: FYV Origin: Wenzhou, Zhejiang, China Material: Cast Steel Structure: Elevated Function: Nrvr Silence Flow Direction: Bidirectional Application: Industrial Usage Pn: 1.6-16.0MPa Ends Con: RF,Rtj,Sw,Bw Specification: CE, SGS HS Code: 8481804090 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.
Body-To-Bonnet Joint
Stainless steel + flesible graphite wounded gasket is used for Class 150 and Class 300 check valve; Stainless steel + flexible graphite wounded gasket is used for Class 600 check valve, and joint gasket is also optional for Class 600 check valve; Ring joint gasket is used for Class900 check valve; Pressurized seal design is used for Class 1500~Class 2500 check valves.
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 NPS12 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.
Note:The sizes of valve connecting and butt-welding terminas can be designed according to customers' request.
Major parts material fom
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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.
Body-To-Bonnet Joint
Stainless steel + flesible graphite wounded gasket is used for Class 150 and Class 300 check valve; Stainless steel + flexible graphite wounded gasket is used for Class 600 check valve, and joint gasket is also optional for Class 600 check valve; Ring joint gasket is used for Class900 check valve; Pressurized seal design is used for Class 1500~Class 2500 check valves.
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 NPS12 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.
| Structural formation | Spiral shell's post bonnet lifting type check valve | |
| Design reference | GB | API |
| Design standard | GB/T 12235 | BS1868 |
| Face to face | GB/T 12221 | ASME B16.10 |
| Flanged ends | JB/T 79 | ASME B16.5 |
| Test &inspection | JB/T 9092 | API598 |
Note:The sizes of valve connecting and butt-welding terminas can be designed according to customers' request.
Major parts material fom
| No. | Part name | Material | |
| ASTM | GB | ||
| 1 | Body | WCB\WC1\WC6\WC9\C5\CF8\CF8C\CF8M\CF3\CF3M | WCB\WC1\WC6\WC9\C5\CF8\CF8C\CF8M\CF3\CF3M |
| 2 | Disc | WCB\WC1\WC6\WC9\C5\CF8\CF8C\CF8M\CF3\CF3M | WCB\WC1\WC6\WC9\C5\CF8\CF8C\CF8M\CF3\CF3M |
| 3 | Stud | A193-B7\A320-B8\A193-B8M | ASME B16.10 |
| 4 | Six angle nuts | A194-2H\A194-8\A194-8M | ASME B16.5 |
| 5 | Gasket | Graphite &stainless steel | Graphite &stainless steel |
| 6 | Bonnet | A105\F11\F22\F5\F9\F304\F316\F321\F304L\F316L | 25Cr18Ni9Ti{tag}Cr18Ni12Mo2Ti 20Cr1Mo1VCr2MoV |
Product Categories : Check Valve
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