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657G — VALVE,CONTROL DIAPHRAGM OPERATED

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

657G: VALVE,CONTROL DIAPHRAGM OPERATED.

VALVE,CONTROL DIAPHRAGM OPERATED. Key specifications include end_item_identification: STARRETT TEST INDICATOR HOLDERS, general_characteristics_item_description: STEEL; 3/8 IN. DIA X 7 IN.

LG IN. This part is cataloged in the U.S. Government catalog under NSN 4820-00-813-5884, 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
657G
NSN: 4820-00-813-5884
NIINs: 008135884, 008840504, 016298592
FSC: 4820 — Valves, Nonpowered
CAGE: 22508 — FISHER CONTROLS CO INC (USA)
SPECIFICATIONS
end_item_identificationSTARRETT TEST INDICATOR HOLDERS
general_characteristics_item_descriptionSTEEL; 3/8 IN. DIA X 7 IN. LG IN
NSN4820-00-813-5884
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 657G · 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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REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS: BRONZE BODY,STEEL TRIM,POLYTETRAFLUOROETHYLENE PACKING
TECHNICAL CHARACTERISTICS
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICSBRONZE BODY,STEEL TRIM,POLYTETRAFLUOROETHYLENE PACKING
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 657G?
657G is a VALVE,CONTROL DIAPHRAGM OPERATED.
What is the NSN for 657G?
657G is cataloged in the U.S. Government catalog under NSN 4820-00-813-5884. 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.