No. 3400HP

303 Stainless Steel with Stainless Poppet


The No. 3400HP Fusion+™ check valve is made from solid stainless steel bar, with all internal components also of stainless steel. The proprietary stainless steel poppets are finely machined for a metal-to-metal seal. Designed to operate in any position, a sensitive spring has been added to close the poppet automatically. The patented Fusion+™ valve design offers flexibility in configuring end connections of different pipe sizes. All valves are 100% American-Made and built to last.


Used for high pressure applications up to 7,500 PSI. The 303 stainless steel seal is suited for a wide range of fluids. Rated for temperatures up to 350°F. Steam 125 lbs.

Flow Rate (Cv)
Size GPM
1/4" 1.1
3/8" 3.1
1/2" 3.8
3/4" (coming soon) coming soon

Cv is flow (GPM) with a 1 psi differential pressure.

Material Specifications
Part Name Material
Body 303 Stainless Steel
Stem 303 Stainless Steel
Poppet 303 Stainless Steel
Spring 302 Stainless Steel
Spring Retainer 303 Stainless Steel
Country of Origin Made in the USA

Operational Specifications
Max. Temperature 350°F
Working Pressure 7500 psi
Cracking Pressure 5 psi
Opt. Cracking Pressure 20 and 40 psi

Pipe Size Part Number Overall Length Valve Diameter Valve Weight
1/4" 3400HP-025 2.73" 1.44" 0.90 lb.
3/8" 3400HP-038 2.73" 1.44" 0.90 lb.
1/2" 3400HP-050 2.73" 1.44" 0.80 lb.
3/4" (coming soon) 3400HP-075 coming soon coming soon coming soon

Products listed contain NPT end connections.


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