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PartsTable / COMPONENT / 20278KS91SS
20278KS91SS ✓ 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: COPPER ALLOY, body_style: BUSHING MOUNT, body_width: 0.280 INCHES MAXIMUM IN, body_height: 0.180 INCHES NOMINAL IN, body_length: 0.770 INCHES MAXIMUM IN, design_type: SOLID. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-127-5118, 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
20278KS91SS
NSN: 4820-01-127-5118
FSC: 4820
CAGE: 15187 — EMERSON AUTOMATION SOLUTIONS FINAL CONTROL US LP DIV NAVY PRODUCT TEAM (USA)
SPECIFICATIONS
materialCOPPER ALLOY
body_styleBUSHING MOUNT
body_width0.280 INCHES MAXIMUM IN
body_height0.180 INCHES NOMINAL IN
body_length0.770 INCHES MAXIMUM IN
design_typeSOLID
constructionLAMINATED
ridge_height0.0840 INCHES MINIMUM AND 0.1040 INCHES MAXIMUM IN
body_materialMETAL
bore_diameter0.5910 INCHES MINIMUM AND 0.5950 INCHES MAXIMUM IN
overall_width1.250 INCHES NOMINAL IN
actuator_styleROUND
NSN4820-01-127-5118
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 20278KS91SS · 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 11
20278Interchangeable
interchangeable cross-reference
interchangeable
B-7485515Interchangeable
interchangeable cross-reference
interchangeable
92157Interchangeable
interchangeable cross-reference
interchangeable
A12721.001.132Interchangeable
interchangeable cross-reference
interchangeable
20278 FIND 7Interchangeable
interchangeable cross-reference
interchangeable
CD4073BFInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 20278KS91SS?
20278KS91SS is a VALVE,SAFETY RELIEF.
What parts can replace 20278KS91SS?
There are 11 known substitutes for 20278KS91SS: 20278, B-7485515, 92157 and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 20278KS91SS?
20278KS91SS is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-127-5118. 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