DIN PN16 Cast Iron Ball Check Valve


Check valve is also called reverse flow valve, check valve, back pressure valve, check valve.This kind of valve depends on the flow of the medium itself in the pipeline and automatically open and close the force, belongs to a kind of automatic valve.




DIN PN16 Cast Iron Ball Check Valve

Check valve is also called reverse flow valve, check valve, back pressure valve, check valve.This kind of valve depends on the flow of the medium itself in the pipeline and automatically open and close the force, belongs to a kind of automatic valve.

Ball check valveis a kind of multi-ball, multi-flow, multi-cone inverted fluid structure of the check valve, mainly by the front and rear valve body, rubber ball, cone body composition.


Check valve is used for the pipeline system when the medium downstream open, counter-current closed automatic valve, the main role is to prevent the medium backflow, pump and drive mechanical reversal, prevent the pump and drive motor suddenly stop running when the water hammer wave, reduce the damage to the pipeline system.Check valve can be divided into five categories: lifting type, swing type, dish type, diaphragm type and ball type check valve according to the relative displacement mode of the closing piece and seat.For the above check valves, most of the following disadvantages: when closed due to the water hammer effect of the "bang" and vibration;Due to the valve plate vibration, the "joint part" shaft and shaft sleeve in the valve produce mechanical friction motion, when the valve plate vibration frequency is too high, the shaft and shaft sleeve will produce mechanical friction motion, valve plate displacement, sealing failure, sometimes cause the valve plate fall off, so that the system protection failure;The fluid flow state in the valve is disordered, the flow resistance loss is big, the energy loss is serious, etc.In order to avoid and improve the above shortcomings, ball check valve with its good sealing, minimal flow resistance and other performance advantages, has been widely used and promoted, its structure from the initial "single ball" check valve gradually improved to the "independent multi-flow multi-ball" check valve.


Application
Design according to EN558-1 sERIES 48;DIN3202 F6
Work pressure PN16
Face to face EN1092-2 PN10/16;ANSI B16.1 Class1125

Material Of Main Parts
1
Body Cast Iron
2 Ball NBR rubber-coated steel ball
3 Cover cast iron
4 "O" Ring NBR
5 Connecting Bolts Stainless steel A2


Cast iron ball check valve PN16                                             


Main Dimensions
Size L DN K C D H f b n d
50 206 48 98 125 155 103.5 2 19.5 4 18
65 238 63 110 145 181 126 2 19 4 18
80 243 78 132.5 160 193 150 2 20 8 18
100 295 98 161 180 232 181 2 20.5 8 18
125 347 119.1 190.5 210 257 218.5 2.5 23.5 8 18
150 394.5 140.2 213 240 282 256.5 2.5 23.5 8 22
200 498 198 274.5 295 346 334 3 27 12 22

Packing & Delivery :

Packing Details : all by seaworthy plywood case and packed strongly by  packing belt as below

Delivery Details : Generally it is 5-10 days if the goods are in stock. or 15-30 days if the goods are OEM or not enough

subject to the order quantity. But anyway,normally, we are able to make sure the delivery will not exceed 45 days.



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