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Exceeds industry standard of 20,000 psi. MAXPRO® offers a complete line of Maximator® medium pressure fittings, tubing, check valves, line filters, anti-vibration fittings and safety head assemblies. Maximator® o-ring check valves provide high quality directional flow control and tight shutoff for liquids and gases. All check valves are supplied with glands and collars. These check valves are not to be used as a relief device.

Materials.
Body, cover, poppet, cover gland: 316 series stainless steel
Spring: 300 series stainless steel
O-Ring Check Valve
Unit of Measure
Items O-Ring Check Valve
21OC4M
O-Ring Check Valves - Pressure to 22,500 psi
List Price Quote
O-Ring Check Valve
21OC6M
O-Ring Check Valves - Pressure to 22,500 psi
List Price Quote
O-Ring Check Valve
21OC9M
O-Ring Check Valves - Pressure to 22,500 psi
List Price Quote
O-Ring Check Valve
21OC12M
O-Ring Check Valves - Pressure to 22,500 psi
List Price Quote
O-Ring Check Valve
21OC16M
O-Ring Check Valves - Pressure to 22,500 psi
List Price Quote
Description N/A Exceeds industry standard of 20,000 psi. Maximator® o-ring check valves provide high quality directional flow control and tight shutoff for liquids and gases. All check valves are supplied with glands and collars. These check valves are not to be used as a relief device.

Materials.
Body, cover, poppet, cover gland: 316 series stainless steel
Spring: 300 series stainless steel
O-ring: Fluorocarbon (FKM) "A"
N/A Exceeds industry standard of 20,000 psi. Maximator® o-ring check valves provide high quality directional flow control and tight shutoff for liquids and gases. All check valves are supplied with glands and collars. These check valves are not to be used as a relief device.

Materials.
Body, cover, poppet, cover gland: 316 series stainless steel
Spring: 300 series stainless steel
O-ring: Fluorocarbon (FKM) "A" (-4 ºF to 392 ºF)
N/A Exceeds industry standard of 20,000 psi. Maximator® o-ring check valves provide high quality directional flow control and tight shutoff for liquids and gases. All check valves are supplied with glands and collars. These check valves are not to be used as a relief device.

Materials.
Body, cover, poppet, cover gland: 316 series stainless steel
Spring: 300 series stainless steel
O-ring: Fluorocarbon (FKM) "A"
N/A Exceeds industry standard of 20,000 psi. Maximator® o-ring check valves provide high quality directional flow control and tight shutoff for liquids and gases. All check valves are supplied with glands and collars. These check valves are not to be used as a relief device.

Materials.
Body, cover, poppet, cover gland: 316 series stainless steel
Spring: 300 series stainless steel
O-ring: Fluorocarbon (FKM) "A"
N/A Exceeds industry standard of 20,000 psi. Maximator® o-ring check valves provide high quality directional flow control and tight shutoff for liquids and gases. All check valves are supplied with glands and collars. These check valves are not to be used as a relief device.

Materials.
Body, cover, poppet, cover gland: 316 series stainless steel
Spring: 300 series stainless steel
O-ring: Fluorocarbon (FKM) "A"
Valve Pattern N/A O-Ring Check Valves
Connection Type N/A 4MF N/A 6MF N/A 9MF N/A 12MF N/A 16MF
Pressure Rating N/A 22500 psi
Orifice Size N/A 0.106 in N/A 0.201 in N/A 0.307 in N/A 0.438 in N/A .562 in
Flow Value (Cv) N/A 0.28 N/A 0.84 N/A 2.30 N/A 4.70 N/A 7.40
Dimension A (Hex.) N/A 0.88 in N/A 1.06 in N/A 1.44 in N/A 2.00 in N/A 2.00 in
Dimension B N/A 2.91 in N/A 3.31 in N/A 4.21 in N/A 5.43 in N/A 6.57 in
Material N/A Body, Cover, Poppet, Cover Gland: 316 Series Stainless Steel O-Ring: Fluorocarbon (FKM) "A" (-4ºF to 392ºF) Spring: 300 Series Stainless Steel
Caution N/A Frequent inspections of O-Rings are necessary to ensure proper service of the check valve. O-Rings have shown satisfactory service life in testing, however different service conditions may lead to variations in cycle and shelf life.
Terms and Conditions N/A
  • All dimensions are for reference only and subject to change.
  • All general terms and conditions of sale, including limitations of our liability, apply to all products and services sold.
CAD N/A STEP File for 21OC4M
N/A STEP File for 21OC6M
N/A STEP File for 21OC9M
N/A STEP File for 21OC12M
N/A STEP File for 21OC16M