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20M55T74PSI1337 — VALVE,SAFETY RELIEF

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

20M55T74PSI1337: VALVE,SAFETY RELIEF.

The VALVE,SAFETY RELIEF is a the manufacturer industrial component. Key specifications include rating_method: ELECTRICAL SINGLE COMPONENT SINGLE WINDING, inclosure_type: FULLY INCLOSED, overall_length: 0.811 INCHES MAXIMUM IN, mounting_method: THREADED HOLE(S) SINGLE GROUP, frequency_rating: 400.0 HERTZ NOMINAL SINGLE COMPONENT, winding_quantity: 1 SINGLE COMPONENT. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-237-6175, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
20M55T74PSI1337
NSN: 4820-01-237-6175
FSC: 4820 — Valves, Nonpowered
CAGE: 01343 — ANDERSON GREENWOOD LP DBA ANDERSON GREENWOOD CROSBY (USA)
SPECIFICATIONS
rating_methodELECTRICAL SINGLE COMPONENT SINGLE WINDING
inclosure_typeFULLY INCLOSED
overall_length0.811 INCHES MAXIMUM IN
mounting_methodTHREADED HOLE(S) SINGLE GROUP
frequency_rating400.0 HERTZ NOMINAL SINGLE COMPONENT
winding_quantity1 SINGLE COMPONENT
inductance_rating229.08 MICROHENRIES MINIMUM AND 268.92 MICROHENRIES MAXIMUM SINGLE COMPONENT SINGLE WINDING
nominal_thread_size0.112 INCHES SINGLE GROUP IN
body_outside_diameter1.125 INCHES MAXIMUM IN
reliability_indicatorNOT ESTABLISHED
maximum_operating_temp145.0 CELSIUS DEGC
thread_series_designatorUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
NSN4820-01-237-6175
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 20M55T74PSI1337 · OEM ⚠ VERIFY BEFORE ORDERING Gate valves = FULL OPEN or FULL CLOSE only — never throttle. Partial opening causes seat erosion and vibration. ✓ BROKER TIP Rising stem shows valve position visually — easier maintenance. Non-rising stem saves headroom. PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
SUBSTITUTES & CROSS-REFERENCES 4
20M-11.25150LB55T74PSIReference document
Same NSN cross-reference
Reference document — Secondary reference
C13377 1.125 150LB 55T74PSIReference document
Same NSN cross-reference
Reference document — Secondary reference
C13377Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
C13377 1-1/4 150LB 55T 74PSISame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Semi-active item — no replacement plannedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 20M55T74PSI1337?
20M55T74PSI1337 is a VALVE,SAFETY RELIEF.
What parts can replace 20M55T74PSI1337?
There are 4 known substitutes for 20M55T74PSI1337: 20M-11.25150LB55T74PSI, C13377 1.125 150LB 55T74PSI, C13377 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 20M55T74PSI1337?
20M55T74PSI1337 is cataloged in the U.S. Government catalog under NSN 4820-01-237-6175. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.