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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.

The DFT® sanitary check valves meet 3-A Standard 58-02 and certified Clean in Place. Applications include pharmaceutical, chemical, beverage/beer, food, dairy industries and others.

Standard Features:
  • Meets 3A Sanitary Standard 58-02
  • Sizes 1/2" thru 4"
  • 150 CWP, 108 ANSI Pressure Class
  • 316L Body and Seat (A351 CF3M)
  • 316 Disc, Spring and Guide Assembly
  • 32 Ra Internal Surface Finish (#4 Ground Finish)
  • Options:
    • 15 Ra Internal Finish
  • CIP (Clean in Place)
  • Clamped Ends
  • Seat Leakage per MSS SP-61
  • Edge-Guided Disc: 1/2" thru 2"
  • Edge/Center-Guided disc: 2 1/2", 3", 4"
  • Lapped "metal" Seat and Disc
  • Springs:
    • Low Cracking Pressures
    • 0.16 psig to 0.66 psig
    • Conical Design
    • Electropolished Finish
  • Standard Gasket Body Seal:
    • EPDM (300ºF Max Temperature)
  • Spring-Assisted Silent Closing
  • Horizontal or Vertical Installation
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Unit of Measure
Items
150 CWP 1/2 316L SS DSV® Vertical Sanitary Check Valve"

150 CWP 1/2" 316L SS DSV® Vertical Sanitary Check Valve
150 CWP 1/2 316L SS DSV® Horizontal Sanitary Check Valve"

150 CWP 1/2" 316L SS DSV® Horizontal Sanitary Check Valve
150 CWP 1/2 316L SS DSV® Vertical Sanitary Check Valve"

150 CWP 3/4" 316L SS DSV® Vertical Sanitary Check Valve
150 CWP 1/2 316L SS DSV® Horizontal Sanitary Check Valve"

150 CWP 3/4" 316L SS DSV® Horizontal Sanitary Check Valve
150 CWP 1/2 316L SS DSV® Vertical Sanitary Check Valve"

150 CWP 1" 316L SS DSV® Vertical Sanitary Check Valve
OLD PART # N/A 2102 N/A 2112 N/A 2103 N/A 2113 N/A 2104
Series N/A DSV®
ASME CWP1 N/A 150
Size N/A 0.50 inDN 15 N/A 0.50 inDN 15 N/A 0.75 inDN 20 N/A 0.75 inDN 20 N/A 1.00 inDN 25
Style N/A Vertical N/A Horizontal N/A Vertical N/A Horizontal N/A Vertical
ASME CLASS N/A 108
Cold Working Pressure
N/A 150 psig10.3 barg
Working Steam Pressure N/A 115 psig
Dimension A N/A 2.50 in64 mm N/A 2.50 in64 mm N/A 2.25 in57 mm N/A 2.50 in64 mm N/A 2.92 in74 mm
Dimension B N/A 0.98 in24.89 mm N/A 1.50 in38.10 mm N/A 0.98 in24.89 mm N/A 1.50 in38.10 mm N/A 2.00 in50.80 mm
Dimension C N/A N/A 0.44 in11.176 mm N/A N/A 0.31 in7.874 mm N/A
Dimension D N/A 0.98 in24.892 mm N/A 0.98 in24.892 mm N/A 0.98 in24.892 mm N/A 0.98 in24.892 mm N/A 1.98 in50.292 mm
Weight N/A 1.4 lb0.6 kg N/A 1.4 lb0.6 kg N/A 1.3 lb0.6 kg N/A 1.4 lb0.6 kg N/A 2.3 lb1 kg
Flow Down Cracking Pressure CP N/A 0.26 psig0.018 barg N/A 0.26 psig0.018 barg N/A 0.26 psig0.018 barg N/A 0.26 psig0.018 barg N/A 0.31 psig0.021 barg
Flow Up Cracking Pressure CP N/A 0.33 psig0.023 barg N/A 0.33 psig0.023 barg N/A 0.33 psig0.023 barg N/A 0.33 psig0.023 barg N/A 0.41 psig0.028 barg
Horizontal Cracking Pressure CP N/A 0.29 psig0.02 bar N/A 0.29 psig0.02 bar N/A 0.29 psig0.02 bar N/A 0.29 psig0.02 bar N/A 0.36 psig0.025 bar
Temperature Rating
N/A 149 ºC (with standard EPDM seal) -28.89 to 148.89 ºC-20 to 300 ºF
Body N/A 316L SS
Seat N/A 316 SS
Disc N/A 316 SS
Spring N/A 316 SS
Guide Assembly N/A 316 SS
Body Seal2 N/A EPDM
Clamp N/A 304 SS
Internal Surface Finish N/A 32 Ra Internal Surface Finish
ENDS N/A Clamped
ASTM N/A A351 CF3M
ANSI N/A B16.34
MSS N/A SP-25 SP-61
Trim N/A 316 SS
Other N/A API 3A 58-02
Cv N/A 2.4 N/A 2.4 N/A 7 N/A 7 N/A 18
Applications N/A Condensate Lines Cookers Cryogenics Evaporators Gas Purge Process Lines Pump Discharge Refrigeration Steam Lines Vacuum Breaker Water Lines
Body Material N/A Stainless Steel
  • 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.