Circle Seal 249A-1PP Check Valve
200 Series: 0 to 3000 psig Check Valves
Features & Benefits:
- Quick opening / positive closing provides a wide range of adaptability
- Large flow capacity: the streamlined poppet and full ports offer minimum restriction to flow
- Zero leakage: the patented sealing principle effects complete leakproof closing under all pressure conditions
- Compact, easy installation
- Efficient inline piston reduces size and weight

Circle Seal 249A-1PP Check Valve Technical Data:
- Description: 1/8″ FNPT Check Valve, Aluminum/Buna-N construction, rated up to 3000 psig at 200F
- Pressure Rating: 3000 psig
- Connections: 1/8″ FNPT
- Body Material: Aluminum (2024-T4/351)
- Seal Material: Buna-N
- Cracking Pressure: 2-4 psig
- Cv: 1.6
- External Leakage: Zero
- Internal Leakage: Zero
- Temperature: -65F to +250F
- Repair Kit: K/249A-1PP
Dimensional Information:
- Dimension “A” (LENGTH): 1.70″
- Dimension “C” (HEX & ROUND): 0.81″
- Dimension “D” (DIAMETER): N/A
- Dimension “E” (WRENCH FLATS): N/A
- Weight: 0.14 lbs (approx.)

Notes:
- Cracking pressure is defined at which flow is 5 cc/min except for 220 series valves (with PTFE seals) for which flow is approximately 0.02 cfm.
- Standard connection type is FNPT; many alternative connection types are available upon special request (contact Sales for assistance).
- Standard cracking pressures are noted above; special cracking pressures may be available upon special request (contact Sales for assistance).
Please contact our Sales Department for assistance in selecting the right products for your application.
Product Catalog: Circle Seal Check Valves


