The DSV® is an in-line spring-assisted check valve designed to prevent flow reversal in industries with strict cleanliness codes. To accommodate various piping arrangements, the DSV® is available as a "Vertical" or "Horizontal" valve. The Horizontal valve is for Horizontal lines requiring a self-draining valve. The "Vertical" design is for "Vertical" installations and "Horizontal" lines when a self-draining valve is not required. The DSV®, with a 316L stainless steel body and seat, is fastened with a quick release clamp and elastomeric body seal to permit fast and easy access to the internals. The disc and seat are lapped to provide excellent shutoff.
Unit of Measure
OLD NPT #
|
Specifications
|
Valve Selection Chart
|
Materials of Construction
|
Codes and Standards
|
Features
|
Options
|
Application
Specifications
Series |
N/A DSV® |
ASME CLASS |
N/A 108 |
Style |
N/A Vertical |
Size |
N/A 0.50 inDN 15 |
Cold Working Pressure |
N/A 0 psig150 psig0 barg10.3 barg |
Dimension A |
N/A 2.50 in64 mm |
Dimension B |
N/A 0.98 in24.89 mm |
Dimension D |
N/A 0.98 in25 mm |
Weight |
N/A 1.4 lb0.6 kg |
Flow Down Cracking Pressure CP |
N/A 0.26 psig0.018 barg |
Flow Up Cracking Pressure CP |
N/A 0.33 psig0.023 barg |
Horizontal Cracking Pressure CP |
N/A 0.02 bar0.29 psig |
Temperature Rating |
N/A 149 ºC (with standard EPDM seal) |
ENDS |
N/A Clamped |
Cv |
N/A 2.4 |
Materials of Construction
Body |
N/A 316L SS |
Seat |
N/A 316L SS |
Disc |
N/A 316 SS |
Spring |
N/A 316 SS (Electropolished) |
Guide Assembly |
N/A 316 SS |
Body Seal2 | N/A EPDM (-75 to 300°F) |
Clamp |
N/A 304 SS |
Internal Surface Finish |
N/A 32 Ra - Standard |
Body Material |
N/A Stainless Steel |
Features
N/A
|
-
1 CWP Rating BSS, BSA, BSE, BSSV, Restrictor Check: 450 to 2500 CWP depending on size;
BSSH6, BSSV6: 450 to 6000 CWP depending on size.
BSSH7: 800 to 6000 CWP depending on size.
DSV: ASME/ANSI 108. - 2 Other body seal materials available upon request.