Find My Check Valve
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.
Unit of Measure

OLD NPT #

OLD PART #

2110

Inventory

Inventory

Specifications

Series

DSV®

Size

4.00 inDN 100

Style

Vertical

ASME CLASS

108

Cold Working Pressure

150 psig10.3 barg

Working Steam Pressure

115 psig

Dimension A

5.5 in140 mm

Dimension B

6 in152.4 mm

Dimension D

4.68 in118.872 mm

Weight

14.9 lb6.8 kg

Flow Down Cracking Pressure CP

0.4 psig0.028 barg

Flow Up Cracking Pressure CP

0.6 psig0.041 barg

Temperature Rating

149 ºC (with standard EPDM seal) -28.89 to 148.89 ºC-20 to 300 ºF

ENDS

Clamped

ASTM

A351 CF3M

MSS

SP-25 SP-61

Trim

316 SS

Other

API 3A 58-02

Cv

174

Valve Selection Chart

ASME CWP1 150

Materials of Construction

Body

316L SS

Seat

316 SS

Disc

316 SS

Spring

316 SS

Guide Assembly

316 SS
Body Seal2 EPDM

Clamp

304 SS

Internal Surface Finish

32 Ra Internal Surface Finish

Body Material

Stainless Steel

Codes and Standards

ANSI

B16.34

Features

N/A

  • Spring-assisted silent closing
  • Horizontal or vertical installation
  • Sizes 1/2" thru 3"
  • 150 CWP, 108 ANSI Pressure Class
  • 316L body and seat
  • 316 disc, spring and guide assembly
  • 32 Ra Internal Surface Finish
  • Edge guided disc: 1/2" thru 2"
  • Edge/center guided disc: 2 1/2", 3"
  • Lapped "metal" seat and disc
  • Springs:
    - Low cracking pressures
    - 0.16 psig to 0.66 psig
    - Conical design
    - Electro polished finish
  • Body Seal: EPDM (standard)
  • CIP (Clean in Place)
  • Clamped ends
  • Seat Leakage per MSS SP-61

Options

N/A 15 Ra Internal Finish; Tuf-Steel Body Seal (450F max); Viton Body Seal (400F max)

Application

N/A Condensate Lines Cookers Cryogenics Evaporators Gas Purge Process Lines Pump Discharge Refrigeration Steam Lines Vacuum Breaker Water Lines

  • 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.