Stainless steel gate valve

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Stainless steel gate valve

Product model: Z41W
Nominal diameter: NPS 2"~48", DN50~1200mm
Pressure range: CL150 ~ 2500Lb, PN10~420MPa
Operating temperature: -29℃～+600℃
Main material: stainless steel
Applications: tap water, sewage, building, petroleum, chemical, food, medicine, light industry, electric power, ship, metallurgy, energy system, etc.

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產(chǎn)品詳細(xì)

Screw gate valve main material in American Standard：

NO.	Name	Material
1	BODY	CF8M	CF8	WCB
2	DISC	CF8M	CF8	WCB
3	STEM	SUS304
4	GASKET	Graphite
5	NUT	A194-8
6	BOLT	A193-B8
7	CAP	CF8M	CF8	WCB
8	SEAT	SUS304
9	STEM PACKING	Graphite
10	HINGE PIN	SUS304
11	EYE BOLT8	A193-B
12	NUT	A194-8
13	NUT	A194-8
14	BOLT	A193-B8
15	STAND	CF8M	CF8	WCB
16	STEM NUT	SUS304
17	NIPPLE	SUS304
18	BEARING	CAP PLASTIC
19	HANDLE WHEEL	QT400-18
20	NUT	A194-8

[Standard parameter]

Design standard	API 600、API6D、ASME B16.34、GB/T 12234
Structural length	ASME B16.10、API6D、GB/T 12221
Connection standard	ASME B16.5、ASME B16.47、GB/T 9113、JB/T 79、HG/T 20592
Pressure test	API 598、GB/T 13927、JB/T 9092
Pressure temperature rating	ASME B16.34 、GB/T 12224

[Valve features]

1, the gate has two sealing surfaces, the sealing surface to form a wedge, wedge angle varies with valve parameters, usually 5 degrees.
2, wedge gate valve sealing principle is combined by two on the two upper wedge sealing surface and sealing surface of the valve body wedging, thereby sealing performance.
3, wedge gate valve according to the stem drive gate opening and closing different ways, can be divided into bright rod gate valve (lift rod gate valve) and dark rod gate valve (rotary rod gate valve).
4, wedge gate valve in accordance with the different forms of the gate structure, can be divided into elastic gate valve and rigid gate valve.
5, the valve body for casting molding, valve body and valve cover with bolt connection, the middle flange using spiral gasket seal, the customer has special requirements can also be used metal ring connection.
6, the channel is smooth, the flow coefficient is small. The sealing surface is eroded and eroded by medium.
7, The sealing surface is made of alloy steel or hard alloy. It has good abrasion resistance and scratch resistance.
8, flexible graphite packing, reliable sealing, easy and flexible operation.
9, medium flow unrestricted, no disturb, do not reduce pressure.

[Adaptive condition]
Stainless steel valve for the nominal pressure of PN1.6 ~ 16.0MPa, -29 pipeline working temperature less than 550 DEG C, hydraulic oil and chemical industry, thermal power plants of various systems, cut off or connected piping media.