Products > Gate valve > Electric flanged gate valve

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
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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)LDD1D2bZ-?dD3HH1D0Weight 
       (kg)
1.64024015011088204-?17.516460260230068
50250165125102204-?17.516461061030069
65270185145122204-?17.516461261230080
80280200160133208-?17.519569069030083
100300220180158208-?17.522083383330094
125325250210184228-?17.5268867876300125
150350285240212248-?22280958958300160
2004003402952682612-?2237010961096300225
2504504053553203012-?2646012441244300348
3005004604103703012-?2653014301474400485
3505505204704303416-?2661015651663400696
4006005805254823616-?30710173518864001000
5007007156505854420-?335860196121814001064