CNBM Ductile iron BS5163 gate valve 12'' -16‘’ 18‘’ 20‘’

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Product Description:

1.standard: DIN/BS/ISO

2.port size: DN32-700mm

3.function:

This pilot-operated pressure reducing valve is professionally used to resolve the domestic water and fire-fighting problems in high-rise buildings, and it can completely replace the water tank.

4.main material list:

body/cover	ductile iron/cast iron
tubes/pilot valve	ss/brass
stem/spring	ss
O-ring/gasket	NBR/EPDM
seat	brass
bolts/washer	ss

5. connection: flange

6.PN 1.0/1.6 /2.5Mpa

7.coating: epoxy painting

8.adavantages:

A. strictly designed accordingto the cybernetics of hydraulic principles;

B. working stablly and reliablly with big flow passage;

C. valve clack opens quickly and close slowly without water hammer shock because of the adjustable closing time;

D. with good sealability and long span,etc.

Company Information:

Allwin Pipe Fittings Co.,Ltd is a private enterprise specialized in exporting various kinds of pipes, pipe fittings, couplings and adaptors, valves, man-hole covers and gratings, fire hydrants,and strainers,etc.(mainly ductile iron&cast iron)

We can supply all above products with different standards and specifications. Our products have been wdely exported to many places in the world, such as Europe, Southeast Asia, USA, Middle East, African countries, China Hongkong, and Taiwan,etc.

We promise that you can get the wanted products with best quality in the most competitive price and the most satisfied services.

Packing&Shipping:

packaging: standard wooden cases with bubble plastic bags for each item or as per your requirements

delivery detail: 25-30 days

Q:Why the valve can only be fully open and fully closed valve can adjust the flow?: You said the cut-off valve is that the spool is rotating rather than vertical movement structure?Theoretically, the flow regulation can be realized by controlling the position (angle or distance), and all of them have mature products.

Q:Generally, how big is the diameter of the installation flange plate gate valve?: Under normal circumstances:Flanged gate valves for piping over DN50,DN50 (below) can be made of wire or gate valves, or flanged gate valves (flanged valves or welded gate valves)

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 difference between flanged gate valve and common gate valve: General diameter of more than 50 with flanges, inspection wells, main pipes, trenches... Must use flange gate valve, good operation, good replacement.

Q:What is gate well?: Technical requirement:1: the valve itself can not seep, it must ensure its tightness;2: water supply pipeline during use, pipeline will be pressure from different aspects, which will produce different degrees of jitter or settlement, which requires the connection of water supply pipes and valves in the well to be reliable, able to adapt to a certain degree of jitter and settlement, and to prevent water infiltration into the well chamber in the pipeline valve wells; deep, slightly larger are generally made of cast iron valve (such as the cut-off valve, butterfly valve) iron valves long-term immersion in water, will affect the service life or cause fracture, so the sealing requirements are higher;3: valve shaft, shaft and well body, manhole cover way of connection should be reliable, not because of heavy rain or water seepage water into the well room.4: valve well is buried in the ground, to bear from different directions of different pressure, and different chemical substances corrosion and damage, and requirements of its pressure capacity and acid and alkali corrosion is better.

Q:Gate valve Z41H-16Q generally used for what place?: Gate valve is one of the most commonly used cut-off valve, mainly used to connect or cut off the medium in the pipeline, not applicable to regulating medium flow. Suitable for medium and large diameter pipelines.

Q:What are the differences between the gate valve and the cut-off valve?: The operating principle is different. The stop valve is an upward stem type, and the handwheel rotates and rises with the stem. Valve is hand wheel rotation, stem upward movement. Flow is not the same, the gate valve requires full open, the cut-off valve is not the same. The gate valve has no inlet and outlet direction requirements, and the cut-off valve has the required inlet and outletAt the same time, usually with the cut-off valve instead of gate valve, but the valve can also be used instead of cut-off valve. Valve sealing performance better, but the size is generally not large, the size of the gate valve can be done great.The main difference between them lies in:1, different structure, gate valve structure is more complex than the height, larger size, from the appearance point of view than the cut-off gate valve is short and high, especially the gate height space needs a higher open bar, the selection in the installation space under the condition of limited attention to.2, sealing surface, valve in the opening and closing valve and the valve seat surface always contact and friction between the sealing surface, and thus easy to wear, especially in close off the valve when the valve before and after the great pressure, sealing surface wear is more serious. And the valve once the valve is in open condition, it's seat and disc sealing surface between, not in contact,

Q:What is the difference between the cut-off valve and gate valve, the general will use the cut-off valve instead of gate valve: Stop valve and gate valveThe working principle is different. The stop valve is an upward stem type, and the handwheel rotates and rises with the stem. Valve is hand wheel rotation, stem upward movement. Flow is not the same, the gate valve requires full open, the cut-off valve is not the same. The gate valve has no inlet and outlet direction requirements, and the cut-off valve has the required inlet and outlet!Gate valve and stop valve are shut-off valve, is the most common two valves.From the exterior, the gate valve is shorter than the cut-off valve, especially the bar valve needs a higher height space. Valve sealing surface has a certain degree of self sealing capacity, its spool depends on the media pressure tight contact with the valve seat sealing surface, to achieve tight leakage. Wedge gate valve spool angle is generally 3~6 degrees, when forced to shut down excessive or temperature changes of the valve core is easy to die. Therefore, high temperature and high pressure wedge gate valve, in the structure have taken certain measures to prevent spool stuck. The valve in the opening and closing valve and valve seat sealing surface contact and mutual friction is always so easy to wear sealing surface, especially in close off the valve, the valve before and after the great pressure, sealing surface wear is more serious.

Q:What is the difference between the model z81x-16q and z81x-16c of the groove gate valve?: Not 16qIs 16p, the former body is stainless steel, and the latter body is carbon steel

Q:Is the axial force and torque of the wedge gate valve the same?: The sealing performance is good, the gate valve is not easy to be jammed when heated, and is suitable for the parts with frequent switches. B is suitable for steam, high temperature oil and gas medium. C is not suitable for easy coking medium.

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