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Electric flanged gate valve
Product model: Z941H
Nominal diameter: NPS 2 "~ 48" DN40 ~ 1200mm
Pressure range: CL150~2500 PN10 ~ 420MPa
Working temperature: -29℃~+600℃
Main material: carbon steel, stainless steel, alloy
Design specifications: GB/T 12234
Construction Length: GB/T 12221
Connection Flange: JB/T79
Test and Inspection: JB/T 9092
Pressure temperature: GB/T 9131
Product marking: GB/T 12220

Electric gate valve is widely used in petrochemicals, thermal power plants and other oil products, water vapor pipeline for access or cut off the medium pipeline opening and closing devices. 
 
 Features
 (1) Small flow resistance. The valve body inside the media channel is straight through, the medium into a straight line flow, flow resistance. 
 (2) More effort when opening and closing. Is compared with the shut-off valve, because either open or closed, gate direction of motion perpendicular to the media flow direction. 
 (3) Height, opening and closing time long. Gate opening and closing stroke larger, drop is carried out by the screw. 
 (4) Water hammer phenomenon is not easy to produce. The reason is a long time off. 
 (5) The medium can flow in any direction on both sides, easy to install. Gate valve on both sides of the channel is symmetrical. 
 (6) The length of the structure (the distance between the two connecting end faces of the shell) is small. 
 (7) Sealing surface easy to wear, affecting the service life. When opening and closing, the two sealing surfaces of the gate and the valve seat frictionally slide with each other, which easily causes abrasion and abrasion under the action of medium pressure, affects the sealing performance and shortens the service life. 
 (8) The price is more expensive. More contact sealing surface, processing more complex, especially the sealing surface of the gate seat is not easy to process, but more parts. 
 (9) Simple shape, short structure length, good manufacturability and wide range of application. 
 (10) Compact structure, good valve rigidity, smooth passage, small flow resistance, stainless steel and hard alloy sealing surface, long service life, PTFE packing, reliable sealing, light and flexible operation.
 

Electric Gate Valves - Performance Specifications

model

Nominal pressure 
       (MPa)

Experimental pressure

Working temperature (℃)

Suitable media

Strength water (MPa)

Sealed (water) air (MPa)

Low pressure seal air (MPa)

Z41H-16C 
       Z41W-16P (R)

1.6

2.4

1.8

0.6

≤425

Nitric acids

Z41W-25P (R)

2.5

3.8

2.8

0.6

≤200

Acetic acid

Z41W-40P (R)

4.0

6.0

4.4

0.6

≤200

Nitric acids

Z41W-64P (R)

6.4

9.6

7.0

0.6

≤200

Acetic acid


 Electric gate valve - the main parts material

Body / bonnet

ZGICr18Ni9Ti

ZG00Cr18Ni10

ZG1Cr18Ni12M02Ti

ZG00Cr17Ni14M02

WCB

Part Name

ZGICr18Ni9Tit series

ZG00Cr18Ni10 series

ZG1Cr18Ni12M02Ti series

ZG00Cr17Ni14M02 series

WCB series

Gate

ZGICr18Ni9Ti

ZG00Cr18Ni10

ZG1Cr18Ni12M02Ti

ZG00Cr17Ni14M02

1Cr13

Valve stem

1Cr18Ni9Ti

00Cr18Ni10

1Cr18Ni12M02Ti

00Cr17Ni14M02

1Cr13

Filler

PTFE braid

PTFE braid

PTFE braid

PTFE braid

graphite

Gasket

304L + PTFE

304L + PTFE

316 + PTFE

316L + PTFE

graphite

Gland

ZGICr18Ni9Ti

ZG00Cr18Ni10

ZG1Cr18Ni12M02Ti

ZG00Cr17Ni14M02 series

WCB

Packing pressure ring

1Cr18Ni9Ti

00Cr18Ni10

1Cr18Ni12M02Ti

00Cr17Ni14M02

1Cr13

Bolt

1Cr17Ni2

1Cr17Ni2

1Cr17Ni2

1Cr17Ni2

35CrMoA

Nut

1Cr18Ni9Ti

1Cr18Ni9Ti

1Cr18Ni9Ti

1Cr18Ni9Ti

45


 The main dimensions and weight

Nominal pressure 
       PN (MPa) 		Nominal diameter    DN(mm) L D D1 D2 b Z-ød D3 H H1 D0 Weight 
       (kg)
1.6 40 240 150 110 88 20 4-ø17.5 164 602 602 300 68
50 250 165 125 102 20 4-ø17.5 164 610 610 300 69
65 270 185 145 122 20 4-ø17.5 164 612 612 300 80
80 280 200 160 133 20 8-ø17.5 195 690 690 300 83
100 300 220 180 158 20 8-ø17.5 220 833 833 300 94
125 325 250 210 184 22 8-ø17.5 268 867 876 300 125
150 350 285 240 212 24 8-ø22 280 958 958 300 160
200 400 340 295 268 26 12-ø22 370 1096 1096 300 225
250 450 405 355 320 30 12-ø26 460 1244 1244 300 348
300 500 460 410 370 30 12-ø26 530 1430 1474 400 485
350 550 520 470 430 34 16-ø26 610 1565 1663 400 696
400 600 580 525 482 36 16-ø30 710 1735 1886 400 1000
500 700 715 650 585 44 20-ø33 5860 1961 2181 400 1064
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