Gate Valve

Gate Valve

Gate valves are primarily designed for on-off services. They are best used in systems which require infrequent use of the valve. The gate valves are designed for full-area flow to minimize the pressure drop and allow the passage of a pipe-cleaning pig. Since most of the flow change occurs near the shutoff, the relatively high fluid velocity causes disk and seat wear and eventual leakage if the valve is used to regulate flow. OGV Gate valves are 100% tested before leave the factory with following features:

Flexible wedge with low center stem-wedge contact, in solid CA15 (13Cr) or hardfaced with 13Cr, SS 316, Monel or CoCr alloy. Wedge is ground and lapped to a mirror finish and tightly guided to prevent dragging and seat damage.

Non-rotating stem with precision Acme threads and burnished finish. Double Acme for faster operation.

Design & Manufacture Standard

Basic Design API 600
Face-to-Face Dimension ANSI B16.10
Flange End Dimension ANSI/ASME B16.5 (1” to 24”)
ANSI/ASME B16.47 (26” & up)
Butt-Weld End Dimension ANSI/ASME B16.25
Inspection & Testing API 598
               

Gate Valve Expanded View

Bill of Material

No. Part Name Material
1 Body A216 WCB A352 LCB A217 WC6 A351 CF8M
2 Gasket 304+Graphite 304+Graphite 304+Graphite 316+Graphite
3 Nut A194 2H A194 7 A194 4 A194 8M
4 Bolt A193 B7 A320 L7 A193 B16 A193 B8M
5 Wedge A216 WCB+13Cr A352 LCB+13Cr A217 WC6+13Cr A351 CF8M
6 Stem A182 F6a A182 F316 A182 F6a A182 F316
7 Bonnet A216 WCB A352 LCB A217 WC6 A351 CF8M
8 Nut A194 2H A194 7 A194 4 A194 8M
9 Packing 304+Graphite 304+Graphite 304+Graphite 316+Graphite
10 Pin Carbon Steel Carbon Steel Carbon Steel Carbon Steel
11 Eye Bolt ASTM A307 GR.8 ASTM A307 GR.8 ASTM A307 GR.8 ASTM A307 GR.8
12 Packing Gland Carbon Steel Carbon Steel Carbon Steel Stainless Steel
13 Nut A194 2H A194 2H A194 2H A194 8M
14 Stem Nut ASTM A439 D2 ASTM A439 D2 ASTM A439 D2 ASTM A439 D2
15 Gland A216 WCB A352 LCB A217 WC6 A351 CF8M
16 Handwheel Ductile Iron Ductile Iron Ductile Iron Ductile Iron
17 Nut Carbon Steel Carbon Steel Carbon Steel Stainless Steel