Description
AWWA Swing Check Valve – Flanged Ductile Iron, Figure 22FC
Figure 22FC AWWA Swing Check Valve is a flanged ductile iron check valve designed for water-service applications requiring dependable prevention of reverse flow. The valve features a resilient disc, brass seat, fusion-bonded epoxy coating, and a ductile iron body for durable service in municipal, commercial, and industrial water systems.
Designed to conform to AWWA C508 and rated for 300 PSI cold working pressure (CWP), the Figure 22FC combines a traditional swing-check design with corrosion-resistant internal and external protection. ASME/ANSI Class 125 flanged ends provide straightforward integration into compatible flanged piping systems.
Product Highlights
- AWWA swing check valve
- Figure 22FC
- 300 PSI cold working pressure (CWP)
- Conforms to AWWA C508
- Ductile iron ASTM A536 Grade 65-45-12 body
- Resilient disc
- Brass seat
- Fusion-bonded epoxy coating
- Epoxy coating conforms to AWWA C550
- ASME/ANSI Class 125 flanged ends
- Meets MSS-SP-71
- NSF/ANSI 372-2011
Technical Specifications
| Valve Type | Swing Check Valve |
|---|---|
| Figure | 22FC |
| Body Material | Ductile Iron |
| Body Material Standard | ASTM A536 Grade 65-45-12 |
| Pressure Rating | 300 PSI CWP |
| End Connection | Flanged |
| Flange Standard | ASME/ANSI Class 125 |
| Disc | Resilient Disc |
| Seat | Brass |
| Coating | Fusion-Bonded Epoxy |
| AWWA Valve Standard | AWWA C508 |
| Coating Standard | AWWA C550 |
| Additional Standard | MSS-SP-71 |
| Compliance | NSF/ANSI 372-2011 |
How Does a Swing Check Valve Work?
A swing check valve allows flow in one direction while automatically helping prevent reverse flow. Forward flow moves the hinged disc away from the valve seat, creating an open flow path through the valve.
As forward velocity decreases or flow begins to reverse, the disc swings back toward the seat. This automatic operation allows the check valve to function without an external actuator during normal service.
Why Choose an AWWA Swing Check Valve?
Water-Service Design
- Conforms to AWWA C508
- Designed for compatible water-service piping systems
- Automatic check-valve operation
- Helps prevent unwanted reverse flow
- Flanged design simplifies integration into compatible piping systems
Durable Construction
- ASTM A536 ductile iron body
- Resilient disc
- Brass seat
- Fusion-bonded epoxy coating
- 300 PSI cold working pressure rating
Fusion-Bonded Epoxy Coating
The Figure 22FC features a fusion-bonded epoxy coating conforming to AWWA C550. The coating provides a protective barrier over the ductile iron valve surfaces and is commonly specified for valves used in water-service systems.
Review project specifications and manufacturer technical documentation when coating thickness, surface preparation, certification, or other project-specific coating requirements must be verified.
Resilient Disc & Brass Seat
Resilient Disc
The resilient disc provides the closing element of the check valve and is designed to seat automatically as forward flow decreases or reverse flow develops.
Brass Seat
The brass seat provides the mating seating surface for the resilient disc and is part of the valve's reverse-flow prevention design.
Common Applications
Water & Utility Systems
- Water-distribution systems
- Municipal water piping
- Water-service installations
- Pump discharge piping
- Utility piping systems
Commercial & Industrial Systems
- Commercial water systems
- Industrial water piping
- Mechanical-room installations
- Building-service water systems
- Compatible flanged piping systems
Flanged Connection
The Figure 22FC is supplied with ASME/ANSI Class 125 flanged ends. Flanged connections provide a bolted, serviceable joint and are commonly used on larger water-distribution and mechanical piping systems.
Verify mating flange dimensions, gasket selection, bolting, pressure requirements, piping alignment, and applicable project specifications before installation.
Installation Guidance
- Confirm the required valve size before ordering.
- Verify that the 300 PSI CWP rating is suitable for the intended system.
- Confirm compatibility with the system fluid and operating conditions.
- Verify mating flange compatibility before installation.
- Inspect the valve, disc, seat, coating, and flange surfaces before installation.
- Remove shipping materials and foreign debris from the valve and piping.
- Confirm the valve flow-direction marking before installation.
- Properly align the mating piping and flanges before tightening bolts.
- Do not use flange bolts to force misaligned piping into position.
- Use suitable gaskets and bolting for the piping system and project requirements.
- Tighten flange bolting using an appropriate cross-pattern procedure.
- Provide adequate piping support so external piping loads are not transferred improperly to the valve.
- Inspect and test the completed installation before placing the system into service.
- Installation should be completed by qualified personnel familiar with flanged water-system valves.
Product Resources
Review the manufacturer technical information for dimensions, materials, ratings, installation requirements, and other product-specific data before ordering or installation.
Need Help Selecting an AWWA Check Valve?
Our industrial PVF specialists can help confirm valve size, pressure rating, flange requirements, materials, applicable standards, system compatibility, and product availability before you order.
Frequently Asked Questions
What type of valve is the Figure 22FC?
The Figure 22FC is a flanged ductile iron AWWA swing check valve designed to allow flow in one direction while helping prevent reverse flow.
What is the pressure rating?
The Figure 22FC is rated for 300 PSI cold working pressure (CWP).
What AWWA standard does this valve conform to?
The Figure 22FC conforms to AWWA C508.
What material is the valve body?
The valve body is ductile iron manufactured to ASTM A536 Grade 65-45-12.
What type of disc does the valve use?
The Figure 22FC uses a resilient disc designed to close automatically as forward flow decreases or reverse flow develops.
What material is the valve seat?
The Figure 22FC uses a brass seat.
What type of coating does the valve have?
The valve has a fusion-bonded epoxy coating conforming to AWWA C550.
What type of flange does the Figure 22FC use?
The Figure 22FC uses ASME/ANSI Class 125 flanged ends. Verify mating flange, gasket, and bolting compatibility before installation.
Does this valve meet MSS-SP-71?
Yes. The supplied product information identifies the Figure 22FC as meeting MSS-SP-71.
Does this valve comply with NSF/ANSI 372?
The supplied product information identifies the Figure 22FC as compliant with NSF/ANSI 372-2011.
How does a swing check valve work?
Forward flow swings the disc away from the seat to allow fluid through the valve. As flow decreases or reverses, the disc swings back toward the seat to help prevent reverse flow.
Does a swing check valve require an actuator?
No external actuator is normally required for basic check-valve operation. The disc responds automatically to system flow.
Where are AWWA swing check valves commonly used?
Typical applications include water-distribution systems, municipal water piping, pump-discharge piping, utility systems, commercial water systems, and compatible industrial water piping.
How do I select the correct valve size?
Select a valve size compatible with the piping system and verify pressure, flow, flange, dimensional, and project requirements using the manufacturer's technical information before ordering.
Should I review the technical data before ordering?
Yes. Review the Figure 22FC technical information for product-specific dimensions, materials, pressure ratings, installation requirements, and applicable certifications before final selection.
Important Ordering Notes
- Confirm the exact valve size required before ordering.
- This product is an AWWA flanged swing check valve.
- Figure designation: 22FC.
- Pressure rating: 300 PSI CWP.
- Body: ASTM A536 Grade 65-45-12 ductile iron.
- Disc: resilient.
- Seat: brass.
- Ends: ASME/ANSI Class 125 flanged.
- Coating: fusion-bonded epoxy conforming to AWWA C550.
- Confirm flange, gasket, and bolting compatibility before installation.
- Verify system pressure, fluid, operating conditions, and project specifications.
- Review the manufacturer technical information when project-specific dimensions or certifications are required.
