Air Valve Family

Crispin Air Release, Air & Vacuum and Universal Combination Valves meet or exceed ANSI/AWWA C512 Standards.

valve products

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)

AIR VALVES: SEWAGE

Available in both standard and high-capacity models, Crispin offers sewage valves in Air & Vacuum, Pressure Air Release and Combination configurations that meet or exceed ANSI/AWWA C512 Standards.

Photo of USL Series—Standard Capacity
USL Series—Standard Capacity

Available in single or dual body styles, these valves act as both Air/Vac and Pres/Rel. Sewer valves.

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Photo of US Series—High Capacity
US Series—High Capacity

These valves are the high-capacity version of our standard Combination Sewer Valves.

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Photo of SL Series—Standard Capacity
SL Series—Standard Capacity

These valves vent air and gas in pressurized systems, while keeping solids away from working parts.

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Photo of S Series—High Capacity
S Series—High Capacity

These valves are the high-capacity version of our standard Pressure Air Release Sewer Valves.

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Photo of SL (A) Series—Standard Capacity
SL (A) Series—Standard Capacity


With long bodies and bottom floats, these valves vent air while keeping waste away from working parts.

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Photo of S (A) Series—High Capacity
S (A) Series—High Capacity

These valves are the high-capacity version of our standard Air & Vacuum Sewer Valves.

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Photo of UX, PX, AX Series for both Clean and Sewage Applications
UX, PX, AX Series for both Clean and Sewage Applications

A maintenance-free, all stainless-steel valve with Air/Vac, Pres/Rel. and Combination assemblies.

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