PartsTable
Technical Data Sheet
Download PDF

7957A3 — VALVE,CHECK

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

7957A3: VALVE,CHECK.

The VALVE,CHECK is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, style_designator: STRAIGHT THRU, thread_direction: RIGHT-HAND SECOND END, mounting_position: HORIZONTAL, nominal_thread_size: 0.250 INCHES SECOND END IN, media_for_which_designed: OXYGEN, GASEOUS SINGLE RESPONSE. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-244-2365, 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
7957A3
NSN: 4820-01-244-2365
FSC: 4820 — Valves, Nonpowered
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
style_designatorSTRAIGHT THRU
thread_directionRIGHT-HAND SECOND END
mounting_positionHORIZONTAL
nominal_thread_size0.250 INCHES SECOND END IN
media_for_which_designedOXYGEN, GASEOUS SINGLE RESPONSE
thread_series_designatorNPT SECOND END
NSN4820-01-244-2365
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 7957A3 · 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
•
MOUNTING POSITION: HORIZONTAL
•
STYLE DESIGNATOR: STRAIGHT THRU
•
THREAD DIRECTION: RIGHT-HAND SECOND END
•
NOMINAL THREAD SIZE: 0.250 INCHES SECOND END IN
•
MEDIA FOR WHICH DESIGNED: OXYGEN, GASEOUS SINGLE RESPONSE
•
MATERIAL: COPPER ALLOY OVERALL
•
THREAD SERIES DESIGNATOR: NPT SECOND END
TECHNICAL CHARACTERISTICS
MOUNTING POSITIONHORIZONTAL
STYLE DESIGNATORSTRAIGHT THRU
THREAD DIRECTIONRIGHT-HAND SECOND END
NOMINAL THREAD SIZE0.250 INCHES SECOND END IN
MEDIA FOR WHICH DESIGNEDOXYGEN, GASEOUS SINGLE RESPONSE
MATERIALCOPPER ALLOY OVERALL
THREAD SERIES DESIGNATORNPT SECOND END
OTHER ITEMS IN FSC 4820 — Valves, Nonpowered
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4820-00-000-0097 4820-00-001-0010 4820-00-001-0020 4820-00-001-0021 4820-00-001-0032 4820-00-001-0037 4820-00-001-0042 4820-00-001-1230
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
Ready to buy 7957A3?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 7957A3?
7957A3 is a VALVE,CHECK.
What is the NSN for 7957A3?
7957A3 is cataloged in the U.S. Government catalog under NSN 4820-01-244-2365. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 7957A3

✓ 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.