WAFER-STYLE SINGLE DISC CHECK VALVE WITH EXTERNAL SPRING
MODEL SDX
​MODEL SDX
Size Range: 2 - 30 inch
ASME Class: 125 / 150
Champion Valves Inc. Model SDX Wafer Style Single Disc Check Valves feature an adjustable
extension spring that provides extra external force to assist in quick valve closure. The spring
tension adjustability of spring torque ratings allow users to adjust cracking pressures for their
unique application.
ADDITIONAL RESOURCES
VALVE FEATURES
Available with just External Spring, External Spring and Lever, and External Spring and Lever with Weights (Consult CVI Engineering about our Pneumatic Dampers for larger sizes).
Externally mounted lever serves as a position indicator and manual override to clear
debris clogging the seat.
Low-weight design (85% lighter than full-body swing check valves).
Optimized space utilization, simplified piping, and lower installation cost.
Externally mounted spring prevents exposure to media and provides adjustable spring torque with no downtime.
​Available in right-hand and left-hand assemblies.
INDUSTRY STANDARDS
-
ASME B16.5, B16.34, and B31.1
-
API 594 and 598
-
MSS-SP-25, MSS-SP-55
-
API 6A and 6D (as applicable)
-
MSS-SP- 61 (standard for the resilient seated metal seated when required)
CONSTRUCTION MATERIALS
Body Material
Ductile Iron
Carbon Steel
316 Stainless Steel
​
​
​
​
Disc Material
304 Stainless Steel
316 Stainless Steel
​
​
​
​
​
Seat Material
Buna
EPDM
Integral Metal
316 Stainless Steel
PTFE
Viton®
​
Spring Material
316 Stainless Steel
​​
​
​
​
​
​
​
End Connection
Plain Face
Raised Face
​
​
​
​
​