PartsTable
Technical Data Sheet
ASTM F1508 ✓ 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 OVERALL, bonnet_type: INSIDE SCREW, connection_type: THREADED EXTERNAL PIPE SECOND END, connection_style: PLAIN (PIPE) SECOND END, special_features: REDUCING CONNECTOR,0.500 IN. NPTF TO 0.250 IN.

NOMINAL FLARE IN, 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 4820-01-148-6940, 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
ASTM F1508
NSN: 4820-01-148-6940
FSC: 4820
CAGE: 81346 — AMERICAN SOCIETY FOR TESTING AND MATERIALS DBA ASTM INTERNATIONAL (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
bonnet_typeINSIDE SCREW
connection_typeTHREADED EXTERNAL PIPE SECOND END
connection_stylePLAIN (PIPE) SECOND END
special_featuresREDUCING CONNECTOR,0.500 IN. NPTF TO 0.250 IN. NOMINAL FLARE IN
style_designatorANGLE
thread_directionRIGHT-HAND SECOND END
features_providedPRESSURE TIGHT OUTLET SIDE
operating_pressure400.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
disk_loading_methodSPRING
flow_control_deviceDISK
nominal_thread_size0.500 INCHES FIRST END IN
NSN4820-01-148-6940
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS SIZE: — · — · — PN: ASTM F1508 · 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
MAXIMUM OPERATING TEMP: 150.0 FAHRENHEIT SINGLE RESPONSE DEGF
THREAD DIRECTION: RIGHT-HAND SECOND END
CONNECTION STYLE: PLAIN (PIPE) SECOND END
CONNECTION TYPE: THREADED EXTERNAL PIPE SECOND END
BONNET TYPE: INSIDE SCREW
DISK LOADING METHOD: SPRING
TECHNICAL CHARACTERISTICS (FLIS)
MAXIMUM OPERATING TEMP150.0 FAHRENHEIT SINGLE RESPONSE DEGF
THREAD DIRECTIONRIGHT-HAND SECOND END
CONNECTION STYLEPLAIN (PIPE) SECOND END
THREAD DIRECTIONRIGHT-HAND FIRST END
CONNECTION TYPETHREADED EXTERNAL PIPE SECOND END
BONNET TYPEINSIDE SCREW
DISK LOADING METHODSPRING
CONNECTION STYLEPLAIN,OPTIONAL END(PIPE) FIRST END
SPECIAL FEATURESREDUCING CONNECTOR,0.500 IN. NPTF TO 0.250 IN. NOMINAL FLARE IN
MATERIALCOPPER ALLOY OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
940-36Interchangeable
interchangeable cross-reference
interchangeable
MIL-V-18634Interchangeable
interchangeable cross-reference
interchangeable
93501Interchangeable
interchangeable cross-reference
interchangeable
5013600 FIND 13Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is ASTM F1508?
ASTM F1508 is a VALVE,SAFETY RELIEF.
What parts can replace ASTM F1508?
There are 4 known substitutes for ASTM F1508: 940-36, MIL-V-18634, 93501 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for ASTM F1508?
ASTM F1508 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-148-6940. This indicates validated use in U.S. government and defense supply chains.
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