Project Description

PN25 resilient seat gate valve, which can be used in water supply and drainage project.

PN25 resilient seat gate valve technical specification:

Valve Design: EN 1171/DIN 3352/EN 1074-1

Face to Face: EN 558-1 Series 14/ 15/ DIN 3202 F4/F5

Flange Drilling: EN 1092-2/ ISO 7005-2

Hydraulic Test: EN 12266/ ISO 5208

Shell Test Pressure: 37.5 bar

Sealing Test Pressure: 27.5 bar

The main advantages of gate valve include:

1. The fluid resistance of the valve is small. Because the valve body of gate valve is straight-through type and the flow of the medium doesn’t change direction, the fluid resistance of it is small compared with other kinds of valves.

2. The sealing performance is better than that of other shut-off valve. The opening and closing of it is more conveniently.

3. The range of applications is more wider. In addition to steam, oil and other media, it can be used in medium containing granular solid and with a large viscosity. It can also be used as air-venting valve and low vacuum system valve.

4. Gate valve has dual flow directions. It’s not subject to the flow directions of the medium. Therefore, it is suitable for use in pipeline where the medium may change the flow direction. It is also easy to install.

PN25 resilient seat gate valve material list

gate valve Pn25

 

Item No.

Part Name

Specification

1

Body

Ductile Iron GGG40/50

2

Wedge

Ductile Iron GGG40/50

3

Wedge Coating

NBR/ EPDM EN681-1

4

Wedge Nut

Copper Alloy

5

Stem

Stainless Steel X20 Cr13

6

Bonnet Gasket

NBR/ EPDM EN681-1

7

Bonnet

Ductile Iron GGG40/50

8

O Ring Back Sealing

EPDM/ NBR

9

Stem Collar

Stainless Steel/ Brass

10

O-Ring

EPDM/ NBR

11

O-Ring

EPDM/ NBR

12

Stuffing Nut

Copper Alloy

13

Dust Guard

EPDM/ NBR

14

Hand wheel

Ductile Iron GGG40/50

15

Stem Cap

Ductile Iron GGG40/50

PN25 resilient gate valve

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