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Fakai Valve Factory Site: Yongxing Industrial Zone, Longwan District, Wenzhou City Tel: 0577-88767789
Fax: 0577-85983279
Mobile: 15958706338
Contact: Mr. Wang Email: 1552028357@qq.com
Website: http://timbuist.com

CVKR Large Caliber Silent Check Valve

CVKR Large Caliber Silent Check Valve Structure
CVKR Large Caliber Silent Check Valve Structure

Structural features

The CVKR large-diameter silent check valve adopts a contour design that conforms to hydraulics to achieve a better streamlined waterway. The design of a pour-back fluid inside can ensure minimal pressure loss in the pipeline. CVKR large-diameter non-return valve is generally installed at the outlet of a large water pump. It can be quickly closed before the water flow reverses to avoid the occurrence of water hammer, water hammer and destructive impact, in order to achieve the purpose of silence, prevent medium backflow and protect equipment. CVKR large diameter check valve is widely used in large-scale water supply and drainage, fire protection, HVAC, industrial and other system pipelines.

Performance parameter


Nominal diameter DN (mm)
300 ~ 600
Nominal pressure MPa 1.0 / 1.6 / 2.5
Working temperature ℃ -10 ~ 80
Seal test 1.1 times the nominal pressure
Shell test 1.5 times the nominal pressure

Part material

Serial number Part Name Material
1 Valve body GG25
2 Valve plate QA19-4
3 Bearing QA19-4
4 spring SUS316
5 Fluid GG25
6 Valve seat QA19-4

Dimension table (flange drilling according to GB / T17241.6-1998 standard)

model Nominal
The way to
DN
D1 D2 D3 N-фD L
1.0
MPa
1.6
MPa
1.0
MPa
1.6
MPa
1.0
MPa
1.6
MPa
1.0
MPa
1.6
MPa
CVKR-0300 300 370 400 410 460 12-13 12-28 181
CVKR-0350 350 429 460 470 520 16-23 16-28 184
CVKR-0400 400 480 515 525 580 16-28 16-31 191
CVKR-0450 450 530 565 585 640 20-28 20-31 203
CVKR-0500 500 582 620 650 715 20-28 20-34 219
CVKR-0600 600 682 725 770 810 840 20-31 20-37 222
CVKR-0700 700 794 840 840 895 910 24-31 24-37 280
CVKR-0800 800 901 950 950 1015 1025 24-34 24-40 356
CVKR-0900 900 1001 1050 1050 1125 1125 28-40 28-40 368
CVKR-1000 1000 1112 1160 1140 1230 1255 28 / -43 28-43 432
CVKR-1200 1200 1328 1380 1390 1455 1485 32-49 32-49 524