GB Flange Gate Valve WCB/SS——ZG VALVE
GB Flange Gate Valve WCB/SS——ZG VALVE
GB Flange Gate Valve WCB/SS——ZG VALVE
  • GB Flange Gate Valve WCB/SS——ZG VALVE
  • GB Flange Gate Valve WCB/SS——ZG VALVE
  • GB Flange Gate Valve WCB/SS——ZG VALVE

GB Flange Gate Valve WCB/SS

ZG VALVE Flange Gate Valve,WCB Gate Valve,SS Gate Valve,Gate Valve(DN15-DN3000), CE pressure equipment Certification,10 inspection procedures, multiple pressure tests,two-year warranty, a variety of materials are available.

Size Range: 1/2“-120”/DN15-DN3000  

Operate: Handhweel,Bevel gear,Pneumatic,Electric-Motorized

Working PressurePN6/PN10/PN16/PN25/PN40/PN64/PN100

Body Materials: WCB/CF8/CF8M

Disc Materials: WCB+13Cr/WCB+STL/CF8/CF8M

Bonnet Materials: WCB/CF8/CF8M

Stem Materials: 45#/2Cr13/F304/F316

Seat Ring Materials: A105+13Cr/A105+STL/CF8/CF8M

Stem Nut: DI/Copper Alloy

Application forWater,Oil &Gas

Payment: T/T, D/P or L/C

Lead Time:5-30 days

Description

Introduction:

The opening and closing part of the gate valve is a gate. The movement direction of the gate is perpendicular to the direction of the fluid. The gate valve can only be fully opened and fully closed, and cannot be adjusted or throttled. The gate has two sealing surfaces. The two sealing surfaces of the most commonly used model gate valve form a wedge. The wedge angle varies with valve parameters, usually 50, and 2°52' when the medium temperature is not high. The gate of the wedge gate valve can be made into a whole, called a rigid gate; it can also be made into a gate that can produce a small amount of deformation to improve its manufacturability and compensate for the deviation of the sealing surface angle during the processing. The plate is called an elastic gate.


Features:

1. Exquisite selection of materials, in line with relevant standards, and high quality materials.

2. The valve fully meets the requirements of the standard, with reliable sealing, excellent performance and beautiful appearance.

3. The sealing pair is advanced and reasonable. The sealing surfaces of the gate and the valve seat are made of Stellite cobalt-based hard alloys with different hardness. The sealing is reliable, high hardness, wear resistance, high temperature resistance, and high temperature resistance. Good corrosion and scratch resistance and long life.

4. After quenching and tempering and surface nitriding treatment, the valve stem has good corrosion resistance, scratch resistance and wear resistance.

5. It adopts wedge-type elastic gate structure, middle and large diameters are equipped with thrust bearings, the friction is small, and it is equipped with impact manual operation, which can be opened and closed easily.


Design advantages:

1. The fluid resistance is small, and the sealing surface is less brushed and corroded by the medium.

2. It saves effort to open and close.

3. The flow direction of the medium is not restricted, does not disturb the flow, and does not reduce the pressure.

4. Simple shape, short structure length, good manufacturing technology and wide application range.


Field of Application:

Size Range: DN50 to DN1000

Temperature: (-)29℃ to 425℃

Allowable Operating Pressure:PN6/PN10/PN16/PN25/PN40/PN64/PN100

Gate valve is widely used in petrochemical plants, metallurgy, water treatment, thermal power plants and other oil and water vapor pipelines to connect or cut off the medium in the pipeline.


Technical Specification:

1.Design standard:GB/T 12234

2.Face to face :GB/T 12221

3.RF flange ends:JB/T79 GB/T9113 HG/T9092

4.Inspect and test:GB/T13927 JB/T9092

5.Pressure-temp :GB/T12224


Installation and maintenance:

1. Handwheels, handles and transmission mechanisms are not allowed to be used for lifting, and collisions are strictly prohibited.

2. The double gate valve should be installed vertically (that is, the valve stem is in the vertical position and the handwheel is on the top).

3. The gate valve with bypass valve should be opened before opening (to balance the pressure difference between inlet and outlet and reduce the opening force).

4. The gate valve with drive mechanism should be installed according to the product manual.

5. If the valve is frequently opened and closed, lubricate at least once a month.


2T 800ss.jpg


MATERIAL LIST

Part Material   
Body WCBCF8CF8M
Disc WCB+13Cr/WCB+STLCF8CF8M
Bonnet WCBCF8CF8M
Stem 45#/2Cr13F304F316
Seat ring A105+13Cr/A105+STLCF8CF8M
Stem nutDI/Copper alloyCopper alloyCopper alloy



Dimensions (mm)    

Size PN16 PN25 PN40 PN64 PN100
DN mm Inch L(RF) PCD n-φd L(RF) PCD n-φd L(RF) PCD n-φd L(RF) PCD n-φd L(RF) PCD n-φd
15 1/2" 130 65 4-14 130 65 4-14 130 65 4-14 170 75 4-14 170 75 4-14
20 3/4" 150 75 4-14 150 75 4-14 150 75 4-14 190 90 4-18 190 90 4-18
25 1" 160 85 4-14 160 85 4-14 160 85 4-14 210 100 4-18 210 100 4-18
32 1 1/4" 180 100 4-18 180 100 4-18 180 100 4-18 230 110 4-23 230 110 4-23
40 1 1/2" 200 110 4-18 200 110 4-18 200 110 4-18 240 125 4-23 240 125 4-23
50 2" 250 125 4-18 250 125 4-18 250 125 4-18 250 135 4-23 250 145 4-25
65 2 1/2" 265 145 4-18 265 145 8-18 280 145 8-18 280 160 8-23 280 170 8-25
80 3" 280 160 8-18 280 160 8-18 310 160 8-18 310 170 8-23 310 180 8-25
100 4" 300 180 8-18 300 190 8-23 350 190 8-23 350 200 8-25 350 210 8-30
125 5" 325 210 8-18 325 220 8-25 400 220 8-25 400 240 8-30 400 250 8-34
150 6" 350 240 8-22 350 250 8-25 450 250 8-25 450 280 8-34 450 290 12-34
200 8" 400 295 12-22 400 310 12-25 550 320 12-30 550 345 12-34 500 360 12-41
250 10" 450 355 12-26 450 370 12-30 650 385 12-34 650 400 12-41 650 430 12-41
300 12" 500 410 12-26 500 430 16-30 750 450 16-34 750 460 16-41 750 500 16-48
350 14" 550 470 16-26 550 490 16-34 850 510 16-34 850 525 16-41 850 560 16-54
400 16" 600 525 16-30 600 550 16-34 950 585 16-41 950 585 16-48 950 620 16-54
450 18" 660 585 20-30 650 600 20-34 1050 610 20-41 1050 630 20-48 1050 675 16-58
500 20" 700 650 20-33 700 660 20-41 1150 670 20-48 1150 705 20-54 1150 760 20-58
600 24" 800 770 20-36 800 770 20-41 1350 795 20-54 1350 820 20-58      
700 28" 900 840 24-36 900 875 24-48                  
800 32" 1000 950 24-39 1000 990 24-48                  
900 36" 1100 1050 28-39 1100 1090 28-54                  
1000 40" 1200 1170 28-42 1200 1210 28-58                  
1200 48"   1390 32-48                        


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