Sanitary Check Valves

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

Unit of Measure

Items	215CAA4A3 150 CWP 1/2" 316L SS DSV® Vertical Sanitary Check Valve	215CBA4A3 150 CWP 1/2" 316L SS DSV® Horizontal Sanitary Check Valve	215DAA4A3 150 CWP 3/4" 316L SS DSV® Vertical Sanitary Check Valve	215DBA4A3 150 CWP 3/4" 316L SS DSV® Horizontal Sanitary Check Valve	215EAA4A3 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 in	N/A 0.50 in	N/A 0.75 in	N/A 0.75 in	N/A 1.00 in
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 psig
Working Steam Pressure	N/A 115 psig
Dimension A	N/A 2.50 in	N/A 2.50 in	N/A 2.25 in	N/A 2.50 in	N/A 2.92 in
Dimension B	N/A 0.98 in	N/A 1.50 in	N/A 0.98 in	N/A 1.50 in	N/A 2.00 in
Dimension C	N/A	N/A 0.44 in	N/A	N/A 0.31 in	N/A
Dimension D	N/A 0.98 in	N/A 0.98 in	N/A 0.98 in	N/A 0.98 in	N/A 1.98 in
Weight	N/A 1.4 lb	N/A 1.4 lb	N/A 1.3 lb	N/A 1.4 lb	N/A 2.3 lb
Flow Down Cracking Pressure CP	N/A 0.26 psig	N/A 0.26 psig	N/A 0.26 psig	N/A 0.26 psig	N/A 0.31 psig
Flow Up Cracking Pressure CP	N/A 0.33 psig	N/A 0.33 psig	N/A 0.33 psig	N/A 0.33 psig	N/A 0.41 psig
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.