GENERAL
ZKVZ silent check valve is mainly made up of body, seat, baffle, disc, bearing and spring, its flow adopts streamline design, which makes the valve pressure loss very small. Its disc open and close travel is very short, so it can close quickly when stopping the pump, as a result it can prevent of big water hammer noise, but it can achieve silent close.
ZKVZ silent check valve is mainly applicable to water supply and drainage, firefighting and heating system, which is mounted on the pump outlet to prevent of damage caused by backflow and water hammer.
TECHNICAL SPECIFICATIONS
Nominal Pressure: 1.0~2.5 MPa
Nominal Diameter: 50~350mm
Applicable Medium: Water, Oil, Sewage, Seawater
Applicable Temperature: 0~80℃
Flanged Ends: GB/T 17241.6, GB/T 9113, ASME B16.1 / B16.5, DIN2532-2534, DIN2542-2544
Inspection and Test: GB/T 13927, API 598
MATERIALS
|
Part
|
Body, Baffle
|
Stem, Bearing, Disc, Seat
|
Spring
|
|
Material
|
Cast Steel, Ductile Iron
|
Bronze, Stainless Steel
|
Stainless Steel
|
DIMENSIONS
|
DN
（mm）
|
40
|
50
|
65
|
80
|
100
|
125
|
150
|
200
|
250
|
300
|
350
|
|
L
|
110
|
120
|
150
|
180
|
240
|
300
|
350
|
450
|
500
|
550
|
575
|
Ball Valve 
