Check Valve Family

Crispin Check Valves meet or exceed ANSI/AWWA C508 Standards.

abbreviations used for product Compliance

NSF 61: Certified for Drinking Water Systems
NSF 372: Certified Lead Free
AIS : American Iron & Steel Act
BA : Buy America ACT
BAN: Buy American Act
BB: Build American Buy America Act (BABA)

SWL SERIES

The SWL provides an AWWA C-508-1 solution for check valve applications, including sewage and slurry, and is available in Lever/Wt, Lever/Spring, and Oil & Air Cushion configurations.

NOMINAL INSIDE DIAMETER: 2”-36” Sizes Available

Construction Materials

bodyDuctile Iron (ASTM A536 Gr 65-45-12)

boltsASTM A307 Gr B Carbon Steel

nutsASTM A563 Gr A Carbon Steel

seatSS ASTM A351 & Buna-N

paint2 part high solids epoxy

discDuctile Iron (ASTM A536 Gr 65-45-12)

pressure rating250psi Maximum Working Pressure

configurationAIS, BAN AVAILABLE

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SWING CHECK VALVES

SWL SERIES

Technical Data

Dimensional and Material Data

Operation & Maintenance

Certifications

AWWA C508 Certification

Additional Information

Terms & Conditions

SWING CHECK VALVES

SWL SERIES

SWL Series CL 125/150 Outside Lever & Weight, Sizes 3"-36":

3"-36" SWL-LW

SWL Series, CL 125/150 Outside Lever & Weight Mounted on Left Side, Sizes 3"-36":

3"-36" SWL-LLW

SWL Series CL 125/150 Outside Lever & Spring, Sizes 3"-36"

3"-36" SWL-LS

SWL Series CL 125/150 Outside Lever & Spring, AIS Configuration, Sizes 3"-36"

3"-36" SWL-LS-AIS

SWL Series CL 125/150 Outside Lever & Weight and Air Cushion, Sizes 3"-36"

3"-36" SWL-LW-AC

SWL Series CL 125/150 Outside Lever & Weight and Air Cushion, AIS Configuration, 3"-36":

3"-36" SWL-LW-AC-AIS

SWL Series CL 125/150 Outside Lever & Weight and Brass Air Cushion, Sizes 3"-36":

3"-36" SWL-LW-BAC

SWL Series CL 150 Outside Lever & Weight and Oil Cushion, Sizes 4"-36":