Tengs Valve International Limited
Tengs Valve International Limited Cast Steel, Forged Steel, Industrial Valves And Strainers
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Forged Lift Check Valve Special Alloy 20 Metal Seat B462 UNS N08020 SW Full Bore 800LB
Quick Details:
1. Constructions: OS&Y, Bolted Bonnet, Welded Bonnet & Pressure Sealed Bonnet;
2. Full Port / Reduced Port
3. Size Range: 1/2" to 2".
4. Pressure Ratings: ANSI 800LB
5. End Connections: Threaded (Npt), Socket Weld (SW)
6. Materials Available in: Alloy 20, A182 - F20, B462 - UNS N08020
7. Various trim materials are available to suit different service conditions
8. NACE MR 0175 on request
Standards
Design and manafacture: BS5352
End connection size:
1) Socket-weld dimension: ANSI B16.11
2) Screw thread dimension: ANSI B1.20.1
3) Butt-welding dimension: ANSI B16.25
4) Flange end dimension: ANSI B16.5
Valve inspection and test: API598
Material according to ANSI/ASTM
Features:
1. Pressure-temperature Ratings for Carbon Steel
CL150-285P.S.I @100° F
CL300-740P.S.I @100° F
CL600-1480P.S.I @100° F
CL800-1975P.S.I @100° F
CL1500-3705P.S.I @100° F
2. The Disc Type of Check Valve
Swing Type, Lifting Type, Ball Type Check Valve
3. Body and Bonnet Connection
Bolted bonnet
Welded bonnet
Pressure seal bonnet
4. Cover Gasket Style
Stainless steel + flexible graphite wounded gasket
Metal gasket, Metal ring gasket, Pressure seal bonnet design
5. Seat
Metallic Seating Surfaces,For Stainless steel check valve, integrai seat is usually adopted, or it can be machined integrally after hard alloy welded.
6. Bore Type:
Full Bore (FB), Reduced Bore (RB)
Descriptions:
1.Forged Steel Check Valve Parts and Material List:
| No. | Part Name | A105/F6a | A105/F6aHFS | LF2/304 | F11/F6aHF | F304(L)/304(L) | F316(L)/316(L) | F51/F51 | F20/F20 |
| 1 | Body | A105 | A105 | LF2 | F11 | F304(L) | F316(L) | F51 | F20 |
| 2 | Seat ring | 410 | 410HF | 304 | 410HF | 304(L) | 316(L) | F51 | F20 |
| 3 | Disc | F6a | F6a | F304 | F6aHF | F304(L) | F316(L) | F51 | F20 |
| 5 | Gasket | 304+ Flexible garphite | 316+ Flexible garphite | ||||||
| 6 | Bonnet | A105 | A105 | LF2 | F11 | F304(L) | F316(L) | F51 | F20 |
| 7 | Bolt | B7 | B7 | L7 | B16 | B8(M) | B8(M) | B8M | B8M |
| 15 | Name plate | AL | AL | AL | AL | AL | AL | AL | AL |
| 32 | Rivet | AL | AL | AL | AL | AL | AL | AL | AL |
| 33 | Steel ball | 430 | 430 | 304 | STL | F316(L) | 316(L) | STL | STL |
| 34 | Disc nut | 2H | 2H | 8 | 8 | 8(M) | B8(M) | 8M | 8M |
| 35 | Rocking arm | 410 | 410 | 304 | 410 | 316(L) | 316(L) | F51 | F20 |
| 36 | Pin | 410 | 410 | 304 | 410 | 304(L) | 316(L) | F51 | F20 |
2. Main Connection Dimensions:
Class 800
| Specification | RP | 1/2 | 3/4 | 1 | 1 1/4 | 1 1/2 | 2 | 2 1/2 | ||
| (NPS) | F.P | 1/4 | 3/8 | 1/2 | 3/4 | 1 | 1 1/4 | 1 1/2 | 2 | |
| Face to face | L | Lft | 79 | 79 | 92 | 111 | 120 | 152 | 172 | 220 |
| (mm) | Swing | 79 | 79 | 92 | 111 | 120 | 120 | 140 | 178 | |
| Height | H | Lft | 61 | 61 | 61 | 78 | 84 | 84 | 118 | 132 |
| (mm) | Swing | 61 | 61 | 61 | 78 | 84 | 84 | 120 | 133 | |
| Flow port dimensions | d | Lift | 7 | 9 | 13 | 175 | 23 | 30 | 35 | 46 |
| (mm) | Swing | 8 | 105 | 135 | 18 | 24 | 29 | 36.5 | 45 | |
| Weight (Kg) | Lift | 1.2 | 1.5 | 17 | 3.3 | 4.2 | 4.2 | 10.5 | 12.5 | |
| Swing | 14 | 15 | 1.7 | 3.3 | 4.2 | 4.2 | 8.5 | 10.9 | ||