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Steel Inline Hydraulic Check Valve, Female 1-11-1/2 NPT Ports, PSI Cracking Pressure, Up to 55.00 GPM & 5000.00 PSI

Description & Features

Engineered by Deltrol Fluid Products this steel check valve ensures reliable performance across demanding hydraulic applications. With a robust design it supports a rated flow of up to 55 GPM and a maximum operating pressure of 5000 PSI offering optimal efficiency for industrial use.

The valve's 1-11-1/2 NPT female ports combined with a low cracking pressure of 3 to 5 PSI enable seamless fluid control and minimal pressure drop. Constructed from high-quality steel it features stainless steel components including the ball and spring and a Delrin ball follower ensuring durability and longevity.

This inline hydraulic check valve is ideal for hydraulic systems requiring free flow in one direction and a positive check in the opposite. Designed to withstand temperatures up to 200F it maintains high performance even under extreme conditions.

Product Model Label: Check Valves

Supplier Part Number: EC40S

Specifications

Cracking Pressure (psi) 3 to 5	CV Factor 9.60	E 1.75	Brand Deltrol Fluid Products	Brand Deltrol Fluid Products	Pack Size 1.00	UOM EA	F 4.50	Materials Steel	Maximum Operating Pressure 5000	Rated Flow 55	Rated Flow 55	Size 1	Supplier Part Number EC40S	Thread 1 1-11-1/2 NPT	Alternate Part Numbers Alternate Part Number C1CN92, Alternate Part Number MI-00279234, Alternate Part Number MINO-00223F25527	Product Weight 2.48 lbs

Similar Products

Model Number	Size	Thread 1	Materials	Maximum Operating Pressure	Rated Flow	CV Factor	Cracking Pressure (psi)	E	F
EC20S Hydraulic/Pneumatic Check Valve	1/4	1/4-18 NPT	Steel	5000	6	1.4700	1 to 2.5	0.75	2
EDC25B Hydraulic/Pneumatic Check Valve	3/8	3/8-18 NPT	Brass	2000	10	3.3000	1 to 2.5	1	2.5
EDC25S Hydraulic/Pneumatic Check Valve	3/8	3/8-18 NPT	Steel	5000	10	3.3000	1 to 2.5	1	2.5
EDC30B Hydraulic/Pneumatic Check Valve	1/2	1/2-14 NPT	Brass	2000	12	3.6000	1 to 2.5	1.13	2.88
EDC30S Hydraulic/Pneumatic Check Valve	1/2	1/2-14 NPT	Steel	5000	12	3.6000	1 to 2.5	1.13	2.88
EDC35S Hydraulic/Pneumatic Check Valve	3/4	3/4-14 NPT	Steel	5000	20	5.4100	1 to 2.5	1.38	3.25
EC10B Hydraulic/Pneumatic Check Valve	1/8	1/8-27 NPT	Brass	2000	3	0.7500	1 to 2.5	0.63	1.69
EC20B Hydraulic/Pneumatic Check Valve	1/4	1/4-18 NPT	Brass	2000	6	1.4700	1 to 2.5	0.75	2
EC40S Hydraulic/Pneumatic Check Valve	1	1-11-1/2 NPT	Steel	5000	55	9.6000	3 to 5	1.75	4.5
EDC35B Hydraulic/Pneumatic Check Valve	3/4	3/4-14 NPT	Brass	2000	20	5.4100	1 to 2.5	1.38	3.25

Product Questions & Answers (1)

Question by: Roy R on Dec 29, 2025, 11:42 AM

Reckon this check valve can handle a steady 5000 PSI in a hydraulic setup? Just want to make sure it won't give out on me.

Answer by: Customer Support on Dec 31, 2025, 8:38 AM

This steel check valve is rated to handle up to 5000 PSI maximum operating pressure, so it should be able to handle that pressure in a non-shock hydraulic system.