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

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Product Description:

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

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Q:Is the check valve in or behind the gate valve?
The exit of the general pump is the first soft connection (shock absorber), followed by the check valve, and then the partition valve (such as butterfly valve, gate valve, cut-off valve, etc.), this is not the final answer.The question is interesting, and no corresponding information has been found in the relevant standards. We have also discussed the related issues, but differences of opinion is relatively large, the advantages of 1, first installed check valve installed after the valve or butterfly valve, check valve, can be protected, especially in a parallel pump, when the pump does not start, another pump starts when the impact force is gate valve or butterfly valve bear, disadvantages: gate valve or check valve who will protect? There have been a case of butterfly valve is broken. 2, first installed gate valve or butterfly valve installed after the check valve, advantages: can protect the butterfly valve or gate valve, the impact on the check valve to bear. Disadvantages: check valve who will protect, check valve by pressure difference switch, if the high pressure high pressure pipe, pump, if the flow is not stable, so check valve will repeatedly switch, will affect the check valve life. Personal opinion: check valve, check valve performance now have changed, many are using the slow closing check valve, so the impact force is two aspects to bear, because exports are not fully open the valve or butterfly valve, so you can put in check after the gate valve or butterfly valve valve. If not the slow closing check valve installed in the valve or the best after the butterfly.
Q:The difference between cut-off valve and gate valve
The 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 are the specifications of the gate valves? Does the work pressure need to be marked separately?
According to domestic valve model standards, the valve model is by the valve type, gate valve drive mode, gate valve connection, gate valve structure, sealing material, valve body material code to indicate.1, gate valve type code named Z;2, gate valve drive mode code by letters, common 2- electric hydraulic, 9- electric, 6- pneumatic, 5- bevel gear drive, 3- turbo worm; manual do not need to write out;3, gate valve connection form code with letters to indicate, 1- internal thread, 2- external thread, 4- flange type, 6- welding, 7- pairs clamp type, 9- clamp, 0- card sleeve;4, the valve structure of code, 0- flexible wedge, 1- rod single wedge gate valve, 2- rising stem wedge gate valve, 3- parallel single gate valve, 4- parallel double gate valve,
Q:What do you mean by "2" and "200 CF8M"?
CF8M is 316,2 "is 50200 caliber stainless steel pressure (American Standard, LB)
Q:What does the gate valve SZ45X-1.0 stand for?
A modelModel SZ45T-1.0, especially in DN100 ~ DN300 piping, soft sealing gate valve shall be used
Q:What does "Z45W-10T" mean?What does each letter stand for?
For type PN10 Z45W Brass Gate ValvesZ is the valve type code, which represents the gate valve;Driving mode is hand wheel (code name omitted);4 is the connection form code, which represents the flange;5 is the gate valve structure form code, represents for the dark pole wedge rigid single gate;
Q:What are the advantages and disadvantages of flat gate valves?
The disadvantage of flat gate valve is that when the medium pressure is low, the sealing force of the metal sealing surface is insufficient, so as to achieve satisfactory sealing. On the contrary, when the medium pressure is high, if the sealing surface is not lubricated by the system media or foreign media, often opening and closing may cause the sealing surface to wear too much. Another disadvantage is that the circular motion of the circular gate in the circular flow, only when it is at the valve closed position of 50%, this valve is more sensitive to flow control. Moreover, the gate will produce severe vibration when it breaks the high-speed and dense medium flow. The valve seat can also be throttled if the seat is made of a V - shaped opening and is tightly oriented to the gate.
Q:What is plug welding gate valve?
Plug connection pipeline welding mode safety gate valve
Q:Installation and operation instructions of knife gate valve
5., when installing the valve, users must reserve the necessary space for valve actuation;The wiring of the 6. driving device shall be carried out according to the wiring diagram;7. knife gate valve must be regularly maintained, shall not be arbitrarily collision and extrusion, so as not to affect the seal.
Q:Why is gate valve or butterfly valve used for water pump?
General pressure is small, use the butterfly valve, when the pressure is big, use the gate valve. The two main function of the valve is to adjust the flow and easy to overhaul.Zibo Boshan new Duke water supply equipment

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