China High Quality Psb Gate Valve Factories – WCB,CF8M,15Mo3 DIN Gate Valve PN25 PN40 PN63 – Guangwo Valve

DIN Gate Valve PN25， PN40 ，PN63

Design Standards

Design / Manufacture as per the standards EN 1984
Face to Face Length (Dimension) as per the standards EN 558
Flanged Dimension according to the standards EN 1092-1
BW according to the standards EN 12627
Testing according to the standards EN 12266

Design Description

- Outside Screw and York
- Bolted Bonnet and Pressure Seal
- Flexible wedge, fully guided
- Seat in stellite or 13%Cr
- Rising stem and non-rising stem
- Available with gear operator
- Flange Ends
- Butt-welding Ends
DIN gate valves usually adopt a wedge-type gate, or a solid or flexible wedge-type gate structure. The gate should be completely withdrawn from the valve seat hole when in the open position, except the parallel double-disc gate.

GW also produce the valves as below,
DIN＆BS EN OS&Y Gate Valve,
DIN＆BS EN Wedge Gate Valve, OS&Y

Technical Features

Wedge gate, os&y design
Designed and manufactured in accordance with DIN＆BS EN standards
Stellite cobalt-based hard alloy surface for high pressure valves
Sealing face wear-resistant, corrosion resistant, good scratch resistance
Long service life
The valve stem has good corrosion resistance and scratch resistance.
Wedge-type elastic gate structure
Rolling bearings make opening and closing easy.
Suitable for various pressure, temperature and medium working conditions.

Construction Materials

General Cast Carbon Steel
A216 WCB (WCC, WCA), GP240GH (1.0619/GS-C25)
Low Temperature Carbon Steel (LTCS), LCB (LCC, LCA), GS-CK25
Alloy Steel:
A352 LC1/LC2/LC2-1/LC3/LC4/LC9/, A743 CA6NM
GS-CK16 GS-CK24 GS-10Ni6 GS-10ni14
High Temperature Steel (Chrome Moly)/Alloy Steel:
A217 WC1/ WC6/ WC9/C5/C12/C12A
GS-22Mo4/ G20Mo5 (1.5419); GS-17CrMo55/ G17CrMo5-5 (1.7357)
Austenitic Stainless Steel/Alloy Steel:
UNS S30400 (S30403) (S30409), A351 CF8/CF3/CF10
G-X6CrNi189/ GX5CrNi19-10(1.4308)
UNS S31600 (S31603) (S31609), A351 CF8M/CF3M/CF10M
GX5CrNiMo19-11-2/G-X6CrNiMo18.10 (1.4408)
UNS S34700 (S34709), A351 CF8C
G-X5CrNiNb189/GX5CrNiNb19-11(1.4552）
AISI316Ti; X6CrNiNo17122/ X6CrNiMoTi17-12-2(1.4571)
ALLOY 20# / UNS N08020, A351 CN7M
Ferritic-Austenitic / Duplex / Super Duplex Stainless Steel:
UNS S31803 /S32205 (Duplex2205), A890/A995 GR.4A (J92205) /A351 CD3MN
UNS S32750 (Super Duplex2507), A890/A995 GR.5A / A351 CE8MN (CD4MCu)
UNS S32760, A890/A995 GR.6A (CD3MWCuN)
Other materials
Alloy 20 ASTM B462 / UNS N08020
Monel 400 / UNS N04400 ASTM B564-N04400 / A494 M35-1 NiCu30Fe (2.4360)
Nickel Alloy 904L / UNS N08904 X1NiCrMoCu25.20.5 (1.4539)
Inconel 625 /UNS N06625 /ASTM B564-N06625 /ASTM A494-CW6MC
NiCr22Mo9Nb (2.4856)
Inconel 825 /UNS N08825 /ASTM B564-N08825 /A494 CU5MCuC (2.4858)
NiCr21Mo (2.4858)

Application & Function

GW Cast steel Gate valves are primarily used for stop valves fully opened or fully closed. They are not normally considered for throttling purposes, but more for slurries, viscous fluids, etc. Gate valves are characterized by a traveling wedge, which is moved with the operation of the stem nut. The wedge travels perpendicular to the direction of the flow. Gate valves usually have a minimum pressure drop when fully open, provide tight shut-off when fully closed, and remain relatively free of contamination buildup.

Accessories

Accessories such as gear operators, actuators, bypasses, locking devices, chain wheels, extended stems and bonnets for cryogenic service and many others are available to meet the customers’ requirements.