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EV-377 ✓ Verified by PartsTable
— · GATE VALVE
WHAT YOU NEED TO KNOW
Full open or full close only — never throttle Rising stem shows position visually
Throttling a gate valve erodes seats
PRODUCT OVERVIEW

The VALVE,SAFETY RELIEF is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1010, duty_type: CONTINUOUS, fuel_type: ACETYLENE, body_style: PLAIN, SOLID, body_width: 1.450 INCHES MAXIMUM IN, bore_style: PLAIN BOTH ENDS. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-220-6407, 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
EV-377
NSN: 4820-01-220-6407
FSC: 4820
CAGE: 35683 — INTEGRATED DISTRIBUTION SYSTEMSLIMITED PARTNERSHIPDBA WATEROUS POWER SYSTEMS (CAN)
SPECIFICATIONS
materialSTEEL COMP 1010
duty_typeCONTINUOUS
fuel_typeACETYLENE
body_stylePLAIN, SOLID
body_width1.450 INCHES MAXIMUM IN
bore_stylePLAIN BOTH ENDS
lens_colorCOLORLESS
point_typeCONVENTIONAL
time_delay0.05 SECONDS MAXIMUM FIXED OPERATE AND RELEASE TIME
tooth_formSTANDARD
body_height1.950 INCHES MINIMUM AND 3.050 INCHES MAXIMUM IN
body_length1.333 INCHES NOMINAL IN
NSN4820-01-220-6407
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: EV-377 · 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
251-01Interchangeable
interchangeable cross-reference
interchangeable
4S90653-101AInterchangeable
interchangeable cross-reference
interchangeable
209Interchangeable
interchangeable cross-reference
interchangeable
GGG-D-751Interchangeable
interchangeable cross-reference
interchangeable
1302Interchangeable
interchangeable cross-reference
interchangeable
505527-2Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is EV-377?
EV-377 is a VALVE,SAFETY RELIEF.
What parts can replace EV-377?
There are 15 known substitutes for EV-377: 251-01, 4S90653-101A, 209 and 12 more. Substitute compatibility should be verified for your specific system.
What is the NSN for EV-377?
EV-377 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-220-6407. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026