PartsTable
Technical Data Sheet
20315LS51SS ✓ 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 303 STEM, bonnet_type: INSIDE SPRING, thread_class: 3A ALL ENDS A, connection_type: THREADED EXTERNAL BOSS ALL ENDS, connection_style: EXTERNAL SEAT FOR GASKET SEAL (BOSS) ALL ENDS, style_designator: ANGLE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-050-2819, 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
20315LS51SS
NSN: 4820-01-050-2819
FSC: 4820
CAGE: 01343 — ANDERSON GREENWOOD LP DBA ANDERSON GREENWOOD CROSBY (USA)
SPECIFICATIONS
materialSTEEL COMP 303 STEM
bonnet_typeINSIDE SPRING
thread_class3A ALL ENDS A
connection_typeTHREADED EXTERNAL BOSS ALL ENDS
connection_styleEXTERNAL SEAT FOR GASKET SEAL (BOSS) ALL ENDS
style_designatorANGLE
thread_directionRIGHT-HAND ALL ENDS
operating_pressure750.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
disk_loading_methodSPRING
flow_control_deviceDISK
nominal_thread_size2.250 INCHES ALL ENDS IN
maximum_operating_temp150.0 FAHRENHEIT SINGLE RESPONSE DEGF
NSN4820-01-050-2819
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS SIZE: — · — · — PN: 20315LS51SS · 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
CONNECTION TYPE: THREADED EXTERNAL BOSS ALL ENDS
MEDIA FOR WHICH DESIGNED: AIR SINGLE RESPONSE
SPECIFICATION/STANDARD DATA: 81349-MIL-V-22549 GOVERNMENT SPECIFICATION
BONNET ATTACHMENT METHOD: BOLTED
CONNECTION STYLE: EXTERNAL SEAT FOR GASKET SEAL (BOSS) ALL ENDS
NONDEFINITIVE SPEC/STD DATA: 1500 RATING AND 1.000 IN. SIZE IN
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-764,TYPE 303-CANCELED FED SPEC SINGLE MATERIAL RESPONSE STEM
TECHNICAL CHARACTERISTICS (FLIS)
CONNECTION TYPETHREADED EXTERNAL BOSS ALL ENDS
MEDIA FOR WHICH DESIGNEDAIR SINGLE RESPONSE
SPECIFICATION/STANDARD DATA81349-MIL-V-22549 GOVERNMENT SPECIFICATION
END ITEM IDENTIFICATIONSHIP,OHIO CLASS SSN(TRIDENT)
BONNET ATTACHMENT METHODBOLTED
CONNECTION STYLEEXTERNAL SEAT FOR GASKET SEAL (BOSS) ALL ENDS
NONDEFINITIVE SPEC/STD DATA1500 RATING AND 1.000 IN. SIZE IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-764,TYPE 303-CANCELED FED SPEC SINGLE MATERIAL RESPONSE STEM
BONNET TYPEINSIDE SPRING
MATERIALSTEEL BODY
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
H20315Interchangeable
interchangeable cross-reference
interchangeable
7315WNC1Interchangeable
interchangeable cross-reference
interchangeable
319696-556Interchangeable
interchangeable cross-reference
interchangeable
63-1278Interchangeable
interchangeable cross-reference
interchangeable
20315Interchangeable
interchangeable cross-reference
interchangeable
ES529006ISSUE2PT2Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 20315LS51SS?
20315LS51SS is a VALVE,SAFETY RELIEF.
What parts can replace 20315LS51SS?
There are 17 known substitutes for 20315LS51SS: H20315, 7315WNC1, 319696-556 and 14 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 20315LS51SS?
20315LS51SS is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-050-2819. This indicates validated use in U.S. government and defense supply chains.
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