Description
Design specification
Flange size according to: ASME B16.5 GB HG SH
Pressure rating: Class 150, 300, 600 PN 2.0, 5.0, 10.0 MPa
Structural features
Double eccentric valve disc, when closed, the valve seat and the sealing surface gradually contact, to achieve no impact, no noise work.
The micro-elastic metal seat has good sealing performance.
Butterfly valve disc design, quick switching, sensitive, long service life.
Swash plate structure streamlines the fluid channel, small flow resistance, energy saving effect.
Parts Materials
Code | Valve body | Flap | Seal seat | |
P | CF8 | CF8+STL | 0Cr19Ni9 | PTFE |
R | CF8M | CF8M+STL | 0Cr17Ni12Mo2 | |
K | CF3 | CF3+STL | 00Cr19Ni11 | |
J | CF3M | CF3M+STL | 00Cr17Ni14Mo2 | |
E | CN7M | CN7M+STL | Alloy # 20 | |
C | WCB | WCB+13Cr | 0Cr19Ni9 | |
D | LCB | CF8+STL | 0Cr19Ni9 |
Performance Characteristics
Performance | Swing check valve | Swash plate non-impact check valve |
Closing force | big | Small (is about 1/5 ~ 1/8 of the former) |
Impact Force | big | There is no |
Tightness | Press API 598 to allow leaks | Zero leaks can be achieved |
Flow Resistance | Large (flow resistance coefficient ξ=1.3 ~ 2.5) | Small (rheostatic coefficient ξ=0.18 ~ 0.6) |
Flow capacity | Small (flow coefficient Cv=76) | Large (flow coefficient Cv=154 ~ 333) |
Weight | Larger | Smaller (is about 80% of the former) |