GENERAL
ZKKR silent check valve is large sized silent check valve, its outline design is in accordance with hydraulics to get excellent flow. Its baffle design can make sure it has very small pressure loss. ZKKR silent check valve is mounted on the pump outlet to close quickly before the water flows back, preventing of water hammer, water slamming to achieve silent close.
ZKKR silent check valve is widely applicable to water supply and drainage, firefighting, heating system and industrial system.
TECHNICAL SPECIFICATIONS
Nominal Pressure: 1.0~2.5 MPa
Nominal Diameter: 300~1200mm
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
|
Disc
|
Bearing
|
Spring
|
Seat
|
|
Material
|
Cast steel, Ductile iron
|
ZQA19-4
|
ZQA19-4
|
Stainless Steel
|
ZQA19-4
|
DIMENSIONS
|
DN（mm）
|
300
|
350
|
400
|
450
|
500
|
600
|
700
|
800
|
900
|
1000
|
1200
|
|
L
|
181
|
184
|
191
|
203
|
219
|
222
|
280
|
356
|
368
|
432
|
524
|
Ball Valve 
