Air & Vacuum Sewer Valves
Crispin Air & Vacuum Sewer Valves have a long body with a float near the bottom. The waste-containing solid remains low and away from working parts, venting the pipe line when filling, and permitting air to re-enter to relieve the vacuum.
Features:
- Exhausts air as a pipeline fills, and allows air in as pipeline fills
- Standard and short body series available
Standard Materials:
- Cast iron with stainless steel trim
- Buna-N rubber seat
- Optional backflush attachment
Sizes: 2`` through 10`` available
Pressure Sewer Valves
Pressure Air Release Valves have a long body to keep liquid waste and solids away from working parts. These valves vent accumulations of air and gas while the system is in operation and under pressure.
Features:
- Helps prevent system shutdown
- Standard, high capacity and short series available
Standard Materials:
- Cast iron with stainless steel trim
- Optional backflush attachment available
Sizes: Standard: 2`` through 4`` available
Combination (Dual) Sewer Valves
Air & Vacuum Sewer Valves and Pressure Sewer Air Release Valves are piped together to perform a dual function at the high point on a line. After the Air & Vacuum Sewer Valve relieves the large volume of air in the line and seats, the Pressure Sewer Valve continues to release entrapped air and gas accumulations.
Features:
- Standard and high capacity series available
- Short body style available
Standard Materials:
- Cast iron with Stainless Steel trim
- Backflushing attachment optional
Sizes: 2`` through 10`` available
Universal Sewer Valves
The Universal Sewer Air Release Valve performs the function of both the Air and Vacuum and Pressure Sewer Valves. This is accomplished all in one valve body.
Features:
- Helps prevent system shutdown
- Single unit integrity
- Standard and short body series available
Standard Materials:
- Cast iron with stainless steel trim
- Optional backflush attachment available
Sizes: 2`` through 6`` available
K-Flo Butterfly Valves
Crispin is proud to announce the acquisition of the K-Flo Butterfly Valve from Dezurik Water Controls of Sartell, MN. This valve line, which features 2 designs and ranges in size from 3`` up to 108``, is fully compliant with AWWA C504 standards. Often referred to as the Wolverine valve line, K-Flo valves have more than 50 years of service in the industry.
The X Series Valves
Available in Air & Vacuum, Pressure Air Release and Combination assemblies, the X Series features our exclusive Head Exchange System, with its head-fixed stainless steel valve internals. To clean, simply loosen the head assembly, which is sealed in place by a sanitary stainless clamp fitting. Pull out the original head, which weighs less than 10lbs, and pop in a spare. Meets ANSI/AWWA C512.
Features:
- Head-Fixed Internals and Head Exchange System
- Revolutionary Design
Standard Materials:
- All parts are 316 Stainless Steel
Sizes: 2``-6``
CHECK VALVES
Foot Valves
Installed on the pump suction, Crispin Foot Valves prevent the pump column from draining upon pump shutdown. Silent during operating and normally closed, the valve has a center-guided disc with a Buna-N seat to provide a drip tight seal.
Features:
- Resilient seat provides positive shut off
- Full flow area
- Rugged construction for long life
Standard Materials:
- Cast iron body
- Bronze disc and seat ring
- Stainless steel spring and inlet screen
- Buna-N resilient seat
Sizes: 2`` through 36`` available
Globe Silent Check Valves
Mounted vertically or horizontally, these valves are designed to close before the pump stops, preventing flow reversal, and eliminating water hammer and system surges.
Features:
- Fully automatic
- Spring-loaded
- Double-guided
- Maximum temperature rating: 150 F (65 C)
Standard Materials:
- Cast iron body
- Bronze trim and stainless steel spring
Sizes: 2 1/2`` through 36`` available
Rubber Flapper Valves
A versatile and cost-effective solution, the Rubber Flapper Check valve provides a smaller stroke than conventional swing check valves, reducing slamming while offering a strong, quick seal.
Features:
- 45 degree seat angle reduces slamming
- Virtually maintenance-free
- Drip tight seating
Standard Materials:
- 65-45-12 ductile iron body
- Steel reinforced Buna-N rubber flapper
- Epoxy coating inside and out
- a variety of options are available
Sizes: 2`` through 24`` available
``SWC`` Swing Check Valves
The SWC Series provides users of Crispin products with an AWWA-C-508-1 solution for more arduous check valve applications, including sewage and slurry.
Features:
- Large diameter pivot shaft construction
- Accepts Air Cushion and Oil Control devices
- Ideal for sewage and slurry
- Available in class 125 and 250
- 316 stainless steel seat standard
- Sizes 2`` through 48``
Tilting Disc Valves
The Crispin Tilting Disc Valve uses superior design and function to provide the most efficient and solid approach to controlling flow reversal, with a head loss lower than that of most any other check valve made.
Features:
- 55Þ seat angle #125 and #250 ratings available
- 40% size increase through seat
- Field replaceable seat
- Optional Bottom and Top Size Dashpots
Standard Materials:
- Cast iron body
- Stainless steel seat rings, pivot pins and bushings
- Epoxy coating inside and out
Sizes: 2`` through 72`` available
Surge Check Valves
Surge Check valves are used on the inlet of the Air and Vacuum, Deep Well, Combination, Dual and Universal Valves to help prevent damage when surges occur.
Features:
- Limits effects of system surge on Air Release Valves
- 125lb and 250lb ANSI flanged
- Ideal for sewage and solids-containing applications
Standard Materials:
- Cast iron construction
- Bronze valve disc, bronze seat ring and stainless steel spring
Sizes: 3`` through 36`` available
