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DS-G-66477 — VALVE,SAFETY RELIEF

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

DS-G-66477: VALVE,SAFETY RELIEF.

The VALVE,SAFETY RELIEF is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING FLOW CONTROL DEVICE, valve_size: 4.000 INCHES IN, connection_type: FLANGE ALL ENDS, special_features: 4 IN. INLET X 6 IN.

OUTLET IN, style_designator: ANGLE FLANGED ENDS, flange_face_design: RAISED STRAIGHT ALL ENDS. This part is cataloged in the U.S. Government catalog under NSN 4820-01-428-1749, 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
DS-G-66477
NSN: 4820-01-428-1749
NIINs: 014281749, 014356007, 014356121
FSC: 4820 — Valves, Nonpowered
CAGE: 15187 — EMERSON AUTOMATION SOLUTIONS FINAL CONTROL US LP DIV NAVY PRODUCT TEAM (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING FLOW CONTROL DEVICE
valve_size4.000 INCHES IN
connection_typeFLANGE ALL ENDS
special_features4 IN. INLET X 6 IN. OUTLET IN
style_designatorANGLE FLANGED ENDS
flange_face_designRAISED STRAIGHT ALL ENDS
valve_operation_methodAUTOMATIC
end_item_identificationSTRATEGIC SEALIFT CONVERSION SHIPS CLASS
opening_pressure_setting142.0 POUNDS PER SQUARE INCH LBS
NSN4820-01-428-1749
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: DS-G-66477 · 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
•
FLANGE FACE DESIGN: RAISED STRAIGHT ALL ENDS
•
CONNECTION TYPE: FLANGE ALL ENDS
•
STYLE DESIGNATOR: ANGLE FLANGED ENDS
•
VALVE SIZE: 4.000 INCHES IN
•
MATERIAL: STEEL CORROSION RESISTING FLOW CONTROL DEVICE
TECHNICAL CHARACTERISTICS
FLANGE FACE DESIGNRAISED STRAIGHT ALL ENDS
CONNECTION TYPEFLANGE ALL ENDS
STYLE DESIGNATORANGLE FLANGED ENDS
VALVE SIZE4.000 INCHES IN
SPECIAL FEATURES4 IN. INLET X 6 IN. OUTLET IN
END ITEM IDENTIFICATIONSTRATEGIC SEALIFT CONVERSION SHIPS CLASS
MATERIALSTEEL CORROSION RESISTING FLOW CONTROL DEVICE
MATERIALSTEEL UNS J03002 BODY
MATERIALSTEEL CORROSION RESISTING STEM
OPENING PRESSURE SETTING142.0 POUNDS PER SQUARE INCH LBS
SUBSTITUTES & CROSS-REFERENCES 1
66451000-DS-G-6Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
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 DS-G-66477?
DS-G-66477 is a VALVE,SAFETY RELIEF.
What parts can replace DS-G-66477?
There is 1 known substitute for DS-G-66477: 66451000-DS-G-6. Substitute compatibility should be verified for your specific system.
What is the NSN for DS-G-66477?
DS-G-66477 is cataloged in the U.S. Government catalog under NSN 4820-01-428-1749. 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.