Circle Seal Series 2233B Check Valve Male NPT - Brass

• Medium flow
• Single piece design
• Resilient O-ring
• Maintenance free
• Dependable
• Economical 

• Body Material 1: Brass
• O-Ring Material: Neoprene
• Connection Sizes:

  • 2233B-2MM: 1/4 in.

  • 2233B-3MM: 3/8 in.

  • 2233B-4MM: 1/2 in.

  • 2233B-6MM: 3/4 in.

• End Connections (Inlet & Outlet): Male NPT
• Operating Pressure: 0 to 800 psig / 0 to 55 bar
• Cracking Pressure: 4 psig
• Available Cracking Pressures: 0.1 to 7 psi
• Operating Temperature: -40 to 300 ºF
• Flow Coefficient (Cv): 

  • 2233B-2MM: 0.74

  • 2233B-3MM: 1.10

  • 2233B-4MM: 2.10

  • 2233B-6MM: 4.70

• Spring Material: 302 Stainless Steel
• Proof Pressure: 1200 psig / 83 bar
• Max. Allowable Pressure Drop (Air): 5 psid
• Max. Allowable Pressure Drop (Oil): 10 psid
• Weight:

  • 2233B-2MM: .08 lbs.

  • 2233B-3MM: .13 lbs.

  • 2233B-4MM: .25 lbs.

  • 2233B-6MM: .36 lbs.

• Optional Body Material: 316 Stainless Steel, Brass
• Optional End Connections: M - Male NPT, S - British Taper Pipe (Male)
• Leakage 2233 Series: Zero @ 1 psig to 800 psig

SAFETY WARNING: It is solely the responsibility of the system designer and user to select products suitable for their specific application requirements and to ensure proper installation, operation, and maintenance of these products. Material compatibility, product ratings and application details should be considered in the selection. Improper selection or use of products described herein can cause personal injury or property damage.