No. 3400

Stainless Steel with Metal Poppet

Description

The No.3400 check valve is made of a one-piece cast stainless steel body, 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. Each valve is tested twice for casting integrity and backflow prevention. All valves are 100% American-Made and built to last.

Download Spec. Sheet (PDF)

Application

Used as an all purpose check valve for multiple applications, including hot water, cold water, steam, oil, gas, compounds and chemicals. Steam 125 lbs.

Flow Rate (Cv)
Size GPM
3/4" 6
1" 10
1-1/4" 20
1-1/2" 39
2" 64

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

Material Specifications
Part Name Material
Body Cast Stainless CF16Fa (303)
Stem 303 Stainless Steel
Poppet 303 Stainless Steel*
Spring 302 Stainless Steel
Cup Washer 304 Stainless Steel
Locknut 18/8 Stainless Steel
Country of Origin Made in the USA

* 1-1/2" - 2" sizes contain a 304 stainless steel poppet

Operational Specifications
Max. Temperature 225°F
Working Pressure 600 psi
Cracking Pressure 1-2 lbs.
Opt. Cracking Pressure 1/2, 5, or 10 lbs.

Dimensions
Pipe Size Part Number Over-all Length Valve Diameter Valve Weight
3/4" 3400-075 3.31" 1.62" 0.80 lb.
1" 3400-100 3.69" 2.00" 1.30 lbs.
1-1/4" 3400-125 4.57" 2.41" 1.95 lbs.
1-1/2" 3400-150 4.88" 2.69" 2.35 lbs.
2" 3400-200 5.56" 3.34" 3.65 lbs.

NPT threaded.

Notes

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