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P591WA-31 — CAP,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

P591WA-31: CAP,VALVE.

The CAP,VALVE is a the manufacturer industrial component. Key specifications include end_item_identification: STRATEGIC SEALIFT CONVERSION SHIPS CLASS, valve_size_for_which_designed: 1.125 INCHES IN, valve_type_for_which_designed: BALL, valve_model_number_for_which_designed: 591WA-11ST. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-435-6130, 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
P591WA-31
NSN: 4820-01-435-6130
FSC: 4820 — Valves, Nonpowered
CAGE: 58553 — SUPERIOR VALVE CO (USA)
SPECIFICATIONS
end_item_identificationSTRATEGIC SEALIFT CONVERSION SHIPS CLASS
valve_size_for_which_designed1.125 INCHES IN
valve_type_for_which_designedBALL
valve_model_number_for_which_designed591WA-11ST
NSN4820-01-435-6130
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: P591WA-31 · 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
KEY FEATURES
•
VALVE TYPE FOR WHICH DESIGNED: BALL
•
VALVE MODEL NUMBER FOR WHICH DESIGNED: 591WA-11ST
•
VALVE SIZE FOR WHICH DESIGNED: 1.125 INCHES IN
TECHNICAL CHARACTERISTICS
VALVE TYPE FOR WHICH DESIGNEDBALL
VALVE MODEL NUMBER FOR WHICH DESIGNED591WA-11ST
VALVE SIZE FOR WHICH DESIGNED1.125 INCHES IN
END ITEM IDENTIFICATIONSTRATEGIC SEALIFT CONVERSION SHIPS CLASS
SUBSTITUTES & CROSS-REFERENCES 2
591WA-11STReference document
Same NSN cross-reference
Reference document — Drawing number reference only
591WA-11ST IT 8Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is P591WA-31?
P591WA-31 is a CAP,VALVE.
What parts can replace P591WA-31?
There are 2 known substitutes for P591WA-31: 591WA-11ST, 591WA-11ST IT 8. Substitute compatibility should be verified for your specific system.
What is the NSN for P591WA-31?
P591WA-31 is cataloged in the U.S. Government catalog under NSN 4820-01-435-6130. 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.