API 600/BS1414 Gate Valves
The gate valve is used for cut-off the medium, when full open the flow through the whole pipe, when the media running, there have a minimum of pressure loss. Gate Valves is usually used for the working environments which use frequently and keep the disc full-or full-closed. But it applicable to regulator or reducing the medium. When the flow of medium is high-speed, the disc to open at local conditions can cause the vibration of the disc, and the vibration damper may damage the disc.
The gate valve is divide into two big types by sealing surface configuration, include wedge-type gate valve and parallel-type gate valve, wedge gate-type valve can be divided into: single-disc gate valve, double-disc gate valve and flexible-disc gate valve; the parallel-type gate valve can be divided into single-disc gate valve and double-disc gate valve. According to location of the thread on the stem, the division can be divided into rising API600 gate valve and non-rising gate valve.
GATE VALVE APPLICATION
Face to Face Dimensions: ANSI B16.10
Basic Design : API 600
End Flange Dimensions: ANSI B16.5
Test Standards: API 598
GATE VALVE MAIN PARTS AND MATERIALS
| NO. | Part Name | Qty. | Material | NO. | Part Name | Qty. | Material |
| 1 | Body | 1 | WCB | 13 | Gland Nut | 1 | 1035 |
| 2 | Seat | 2 | A105+HF | 14 | Hand wheel | 1 | 60-40-18 |
| 3 | Wedge | 1 | WCB+F6 | 15 | Lock Nut | 1 | A29 1035 |
| 4 | Stem | 1 | A182 F6 | 16 | Oil Filler | 1 | A570 GR.A |
| 5 | Gasket | 1 | 08FFlexible Graphite | 17 | Eye Bolt | 2 | A193 B7 |
| 6 | Bonnet | 1 | WCB | 18 | Eye Nut | 2 | A194 2H |
| 7 | Back seat | 1 | A276 410 | 19 | Pin | 2 | A29 1035 |
| 8 | Packing | 1 | Stainless Steel Wire With Flexible Graphite | 20 | Spilt Pin | 2 | A570 GR.A |
| 9 | Packing | 4-5 | 21 | Stud | A193 B7 | ||
| 10 | Gland | 1 | A276 410 | 22 | Nut | A194 2H | |
| 11 | Gland flange | 1 | WCB | 23 | Rivet | 2 | 304 |
| 12 | Stem Nut | 1 | D-2 | 24 | Name Plate | 1 | 304 |
