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8171E-1HS28 — VALVE,DIRECTIONAL CONTROL,3 POSI

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

8171E-1HS28: VALVE,DIRECTIONAL CONTROL,3 POSI.

VALVE,DIRECTIONAL CONTROL,3 POSI. Key specifications include end_item_identification: 4920010245099. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-056-9717, 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
8171E-1HS28
NSN: 4820-01-056-9717
FSC: 4820 — Valves, Nonpowered
CAGE: 44142 — NORTHFIELD FOUNDRY AND MACHINE COMPANY (USA)
SPECIFICATIONS
end_item_identification4920010245099
NSN4820-01-056-9717
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 8171E-1HS28 · 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
•
GENERAL CHARACTERISTICS ITEM DESCRIPTION: 10.000 IN. FROM CENTERLINE TO END OF PIPE; 2.250 IN. FACE TO CENTERLINE DISTANCE; 1.594 IN. REF TYPE 4 FROM CENTERLINE TO BOLT HOLE CENTER; 3.188 IN. REF TYPE 2 DISTANCE FROM BOLT HOLE CENTER TO BOLT HOLE CENTER; 4.500 IN. REF WIDTH; 4 BOLT HOLES; 1/4-20 UNC-2B THREAD SIZE OF BOLT HOLES FOR PANEL MOUNTING REF; 1 IN. IPT TYP 4 PORTS REF; 6,000 PSI WORKING PRESSURE RANGE; 9,000 PSI PROOF PRESSURE RANGE; 15,000 PSI BURST PRESSURE RANGE; MINUS 65 DEGREE F TO 250 DEGREE F TEMPERTURE RANGE (SPECIAL); TO BE USED WITH MIL-L-7808 OIL; VALVE TO BE SUPPLIED WITH VITON SEALS IN
TECHNICAL CHARACTERISTICS
GENERAL CHARACTERISTICS ITEM DESCRIPTION10.000 IN. FROM CENTERLINE TO END OF PIPE; 2.250 IN. FACE TO CENTERLINE DISTANCE; 1.594 IN. REF TYPE 4 FROM CENTERLINE TO BOLT HOLE CENTER; 3.188 IN. REF TYPE 2 DISTANCE FROM BOLT HOLE CENTER TO BOLT HOLE CENTER; 4.500 IN. REF WIDTH; 4 BOLT HOLES; 1/4-20 UNC-2B THREAD SIZE OF BOLT HOLES FOR PANEL MOUNTING REF; 1 IN. IPT TYP 4 PORTS REF; 6,000 PSI WORKING PRESSURE RANGE; 9,000 PSI PROOF PRESSURE RANGE; 15,000 PSI BURST PRESSURE RANGE; MINUS 65 DEGREE F TO 250 DEGREE F TEMPERTURE RANGE (SPECIAL); TO BE USED WITH MIL-L-7808 OIL; VALVE TO BE SUPPLIED WITH VITON SEALS IN
END ITEM IDENTIFICATION4920010245099
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

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 8171E-1HS28?
8171E-1HS28 is a VALVE,DIRECTIONAL CONTROL,3 POSI.
What is the NSN for 8171E-1HS28?
8171E-1HS28 is cataloged in the U.S. Government catalog under NSN 4820-01-056-9717. 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.