Gp240gh Rising Stem Gate Valve DN200 System 1

Gp240gh Rising Stem Gate Valve DN200

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DIN WCB/GS-C25/GP240GH Rising Stem Gate Valve

Specification:

Size: DN15-DN1200

Model:Z40H
Pressure: PN16-PN250
Material: WCB, LCB, WC6, WC9, C12, C5, CF8, CF3, CF3M, CF8M.Etc

Type: Rising Stem and Wedge Single Disc, Solid or Flexible wedge, flat gate.

Operation: Handwheel, gear worm ,Electric operated

Standard:
Design & Manufacture Std.: GB/T12234,DIN3352,GOST 12820-80,Etc.

Face to Face Std.: GB/T12221,DIN3202,Etc.

End Connection Std.: JB/T79,DIN2543-2550,GOST 12820-80,Etc.

Test Standard: ISO5208, API 600, BS 6755

Full Port Design, OS&Y, Outside and Screw, Bolted bonnet, Back Seal Structure
Flexible wedge, Fully guided, Choice of Solid or Split wedge
Renewable or welded seat
Extended stem design for low temperature
Flanged or Butt-welding ends

Q:What type of flange does it fit with the gate valve?: According to the welding plate flange, flange material selection of piping material.

Q:How about the model of stainless steel gate valve?: Stainless steel gate valve is divided into 304 stainless steel gate valve, 316 stainless steel gate valve, 321 stainless steel gate valve. The expression is: Z41H-16P.

Q:The valve safety valve check valve + + + = exposed part of a water pump adapter? Five: There is integration now.Pump adapter SQ100. All contain.

Q:What is the standard length of GB steel gate valve?: 1, product standardsGeneral purpose valves, flanged connections, iron gate valves, GB/T 12232-2005General requirements for steel valves GB/T 12224-2005"Steel flat gate valves for pipelines" JB/T 5298-91Inspection and test of valves. JB/T 9092-1999Standard for safety evaluation of drinking water distribution equipment and protective materials GB/T 17219-1998

Q:What is the difference between cut-off valve and gate valve?: Simply put, the cut-off valve is one-way, only into, do not give up, the valve is two-way

Q:Notes on flat gate valves: internal structureThe 1 seat O ring seal and preload floating seat structure, so that import and export of two-way valve seal plate; and the structure of the normal valve opening and closing torque only 1/2, can easily open and close valves2. when fully open, the channel is smooth and straight, the flow resistance coefficient is extremely small, and there is no pressure loss. The pipeline can be cleaned through the hair bulb3 the packing structure with the ability of self sealing, without frequent adjustment, opening and closing very lightweight, and reliable seal, the stuffing box is arranged at the auxiliary seal oil into the structure, absolutely reliable sealing performance, thereby achieving zero leakage; solve the shortcomings of the general valve packing leakage of the most vulnerable4., when the flat gate valve is closed, it can automatically unload the inner cavity high pressure, and ensure the safe use5., fully enclosed structure, good protection performance, can adapt to all-weather requirements6., the valve seat sealing structure should be elastic, preload, upper and lower sealing seat at the same time sealed structure. The valve seat and the seal are always face to face sealed.The 7. seat has self-cleaning function and is free of direct airflow during valve opening or closing. The seat shall be made of lubricated, non wearing material.8. valve actuator failure will not affect the other parts of the valve, maintenance and replacement work can be carried out without removing the valve.9. yoke sleeve aluminum bronze yoke sleeve with pin type thrust bearing to minimize operation torque.10. stem - thread length until bracket; dowel and spot welding; stability.11. pressure seal - simple construction, with sectional retaining rings and silver plated low carbon steel gaskets, helps to remove and achieve the best bonnet seal.12. seat ring - welded seat ring is perpendicular to the flow channel and is easy to maintain.

Q:What is the allowable leakage rate of the gate valve D?: In GB/T 13927, the leakage rate of the valve is divided into 10 grades, namely: A, AA, B, C, CC, D, E, EE, F, G class. And stipulates that when the order contract does not specify, the metal sealing valve according to D requirements.

Q:Will the water supply and drainage to wear civil air defense gate valve, the use of bright rod or dark rod?: 2, soft sealing gate valve at the bottom of the pit. No accumulation of slag material, valve opening and closing of the failure rate is low;

Q:What's the difference between open rod gate and dark rod gate valve?: 4, the dark pole gate valve height smaller size; Ming rod gate valve requires a larger installation space;5, the structure of the rod gate valve is beneficial to the lubrication of the valve stem, and the degree of opening and closing is obvious. The stem thread of the dark rod gate valve is not only unable to lubricate, but also directly accepts the medium erosion and is easy to damage. Therefore, the open bar gate valve is used more widely

Q:What else, P54140V, 170V? What do they mean?: P work pressureP54 temperature at 540 degrees of work pressureThe pressure at P54 100 is 540 at the temperature of 100barV valve for chromium molybdenum vanadium steelP54 pressure 140V temperature at 540 DEG C for 140bar valve for chromium molybdenum vanadium steelP54 pressure 170V temperature at 540 DEG C for 170bar valve for chromium molybdenum vanadium steelFrom the JB/T4018 "valve type model preparation method"The standard unit is MPa, but it is usually used in bar

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