Page 40 - Industrial Ancillaries 2020 Catalogue (Sterling)

01
H-400 Series Check Valves
Instrumentation
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GENERAL
The H-400 Series is a compact design for instumentation panels and systems, which provides an accurate operating point. H-400 valves are normally closed. When differential pressure between inlet and outlet is higher than the set pressure of the spring, the loaded poppet will move backwards and will enable a free passage of ow through the valve.
FEATURES
316 Stainless Steel and Brass construction Moderate Pressure Characteristics (up to 3000 psi) Compact Design
Variable xed cracking-pressure springs
HAM-LET LET-LOK®, Male & Female NPT, and HTC® Face-Seal Bead Ends
CLEANING & PACKAGING
HAM-LET H-400 valves are treated with HAM-LET Passivation,
Cleaning and Packaging (Procedure 8075). HAM-LET H-400 Valves with face seal end connections are treated with HAM-LET Oxygen Cleaning and Packaging (Procedure 8055). Oxygen cleaning and packaging for other end connections are available as an option.
TESTING
The H-400 valve designs have been tested for Proof and Burst. Every H-400 valve is factory tested for proper assembly, by leakage detection at 1000 psig (68 bar) for 10 seconds.
Every H-400 valve is factory tested for functionality at the relevant cracking pressure, 5 cycles each.
H-400 Series Check Valve
Straight LET-LOK®
• LET-LOK® ended
• 1/3 psi cracking pressure
• Other cracking pressures available on request
Part No. OD
H-400-SS-L-1/4-1/3 1/4 H-400-SS-L-3/8-1/3 3/8 H-400-SS-L-1/2-1/3 1/2
240
Price
£38.06 £75.15 £81.62 £38.06 £75.15 £81.62
240
H-400-SS-L-6-1/3 H-400-SS-L-10-1/3 H-400-SS-L-12-1/3
H-410 Series Check Valve
Female Thread NPT 3000 psi
Temperature Range:
-23°C to +191°C
Working Pressure:
3000 psi
6 mm 10 mm 12 mm
• 1/3 psi cracking pressure
• Other cracking pressures available on request
Part No. NPT
H-410-SS-N-1/4-1/3 1/4 H-410-SS-N-3/8-1/3 3/8 H-410-SS-N-1/2-1/3 1/2
Price
£38.06 £79.07 £81.62