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633957 — COMPRESSOR UNIT,RECIPROCATING

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

633957: COMPRESSOR UNIT,RECIPROCATING.

The COMPRESSOR UNIT,RECIPROCATING is a the manufacturer industrial component. Key specifications include current_type: DC, overall_width: 2.800 INCHES NOMINAL IN, overall_length: 8.250 INCHES NOMINAL IN, voltage_rating: 12.0 VOLTS MINIMUM AND 36.0 VOLTS MAXIMUM, pressure_rating: 30.000 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS, actuation_method: ELEC CAPACITANCE. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-505-2728, 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
633957
NSN: 4820-01-505-2728
FSC: 4820 — Valves, Nonpowered
CAGE: 20024 — GARDNER DENVER THOMAS, INC. DBA THOMAS PRODUCTS DIVISION (USA)
SPECIFICATIONS
current_typeDC
overall_width2.800 INCHES NOMINAL IN
overall_length8.250 INCHES NOMINAL IN
voltage_rating12.0 VOLTS MINIMUM AND 36.0 VOLTS MAXIMUM
pressure_rating30.000 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS
actuation_methodELEC CAPACITANCE
frequency_rating83.0 KILOHERTZ NOMINAL
overall_diameter2.800 INCHES NOMINAL IN
resistance_in_ohms600.000 PER INCH
end_item_identificationFAN COIL
media_for_which_designedWATER
NSN4820-01-505-2728
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 633957 · 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 2
21410-0001Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
21410-0001 ITEM 5Same 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 633957?
633957 is a COMPRESSOR UNIT,RECIPROCATING.
What parts can replace 633957?
There are 2 known substitutes for 633957: 21410-0001, 21410-0001 ITEM 5. Substitute compatibility should be verified for your specific system.
What is the NSN for 633957?
633957 is cataloged in the U.S. Government catalog under NSN 4820-01-505-2728. 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.