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NB73D — CONTROL ELEMENT,STEAM TRAP

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

NB73D: CONTROL ELEMENT,STEAM TRAP.

The CONTROL ELEMENT,STEAM TRAP is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 4820-00-174-3090, 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
NB73D
NSN: 4820-00-174-3090
FSC: 4820 — Valves, Nonpowered
CAGE: 79923 — A. SMITH & SON, INC. (USA)
SPECIFICATIONS
general_characteristics_item_descriptionSTAINLESS STEEL HOUSING,CRES NEEDLE VALVE,1.500 IN. OD,2.938 IN. LG,BELLOWS TYPE STEAM CONTROL,USED ON SARCO CO. 3/4-9-125 THERMOSTATIC STEAM TRAPS IN
NSN4820-00-174-3090
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: NB73D · 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
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GENERAL CHARACTERISTICS ITEM DESCRIPTION: STAINLESS STEEL HOUSING,CRES NEEDLE VALVE,1.500 IN. OD,2.938 IN. LG,BELLOWS TYPE STEAM CONTROL,USED ON SARCO CO. 3/4-9-125 THERMOSTATIC STEAM TRAPS IN
TECHNICAL CHARACTERISTICS
GENERAL CHARACTERISTICS ITEM DESCRIPTIONSTAINLESS STEEL HOUSING,CRES NEEDLE VALVE,1.500 IN. OD,2.938 IN. LG,BELLOWS TYPE STEAM CONTROL,USED ON SARCO CO. 3/4-9-125 THERMOSTATIC STEAM TRAPS IN
SUBSTITUTES & CROSS-REFERENCES 1
48381Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is NB73D?
NB73D is a CONTROL ELEMENT,STEAM TRAP.
What parts can replace NB73D?
There is 1 known substitute for NB73D: 48381. Substitute compatibility should be verified for your specific system.
What is the NSN for NB73D?
NB73D is cataloged in the U.S. Government catalog under NSN 4820-00-174-3090. 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.