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.

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Prod. #

Style

Size

Dimension A

Dimension B

Dimension C

Dimension D

Cv

Horizontal Cracking Pressure CP

N/A Vertical N/A 0.5 inDN 15 N/A 2.50 in64 mm N/A 0.98 in24.89 mm N/A N/A 0.98 in25 mm N/A 2.4 N/A 0.29 psig0.020 bar
N/A Vertical N/A 0.75 inDN 20 N/A 2.25 in57 mm N/A 0.98 in24.89 mm N/A N/A 0.98 in25 mm N/A 7 N/A 0.29 psig0.020 bar
N/A Vertical N/A 1 inDN 25 N/A 2.92 in74 mm N/A 2.00 in50.80 mm N/A N/A 1.98 in50 mm N/A 18 N/A 0.36 psig0.025 bar
N/A Vertical N/A 1.5 inDN 40 N/A 3.29 in84 mm N/A 2.50 in63.50 mm N/A N/A 1.98 in50 mm N/A 38 N/A 0.28 psig0.019 bar
N/A Vertical N/A 2 inDN 50 N/A 4.03 in102 mm N/A 3.00 in76.20 mm N/A N/A 2.52 in64 mm N/A 53 N/A 0.23 psig0.016 bar
N/A Vertical N/A 2.5 inDN 65 N/A 5.56 in141 mm N/A 4.00 in101.60 mm N/A N/A 3.05 in77 mm N/A 81 N/A 0.54 psig0.037 bar
N/A Vertical N/A 3 inDN 80 N/A 4.38 in111 mm N/A 4.00 in101.60 mm N/A N/A 3.58 in91 mm N/A 109 N/A 0.54 psig0.037 bar
N/A Horizontal N/A 0.5 inDN 15 N/A 2.50 in64 mm N/A 1.50 in38.10 mm N/A 0.44 in11 mm N/A 0.98 in25 mm N/A 2.4 N/A 0.29 psig0.020 bar
N/A Horizontal N/A 0.75 inDN 20 N/A 2.50 in64 mm N/A 1.50 in38.10 mm N/A 0.31 in8 mm N/A 0.98 in25 mm N/A 7 N/A 0.29 psig0.020 bar
N/A Horizontal N/A 1 inDN 25 N/A 3.48 in88 mm N/A 3.00 in76.20 mm N/A 0.50 in13 mm N/A 1.98 in50 mm N/A 12 N/A 0.36 psig0.025 bar
N/A Horizontal N/A 1.5 inDN 40 N/A 3.67 in93 mm N/A 3.12 in79.25 mm N/A 0.50 in13 mm N/A 1.98 in50 mm N/A 36 N/A 0.28 psig0.019 bar
N/A Horizontal N/A 2 inDN 50 N/A 4.41 in112 mm N/A 3.62 in91.95 mm N/A 0.50 in13 mm N/A 2.52 in64 mm N/A 47 N/A 0.23 psig0.016 bar
N/A Horizontal N/A 2.5 inDN 65 N/A 5.56 in141 mm N/A 4.75 in120.65 mm N/A 0.73 in19 mm N/A 3.05 in77 mm N/A 69 N/A 0.54 psig0.037 bar
N/A Horizontal N/A 3 inDN 80 N/A 4.88 in124 mm N/A 4.75 in120.65 mm N/A 0.48 in12 mm N/A 3.58 in91 mm N/A 90 N/A 0.54 psig0.037 bar
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