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Technical Data Sheet
71S102 ✓ 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, connection_type: UNTHREADED INTERNAL PIPE FIRST END, connection_style: SOCKET FIRST END, special_features: W/LIFTING LEVER, style_designator: ANGLE, features_provided: PRESSURE TIGHT OUTLET SIDE. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-289-1857, 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
71S102
NSN: 4820-00-289-1857
FSC: 4820
CAGE: 71905 — DERBYSHIRE MACHINE & TOOL CO (USA)
SPECIFICATIONS
materialCOPPER ALLOY BODY
connection_typeUNTHREADED INTERNAL PIPE FIRST END
connection_styleSOCKET FIRST END
special_featuresW/LIFTING LEVER
style_designatorANGLE
features_providedPRESSURE TIGHT OUTLET SIDE
operating_pressure100.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
disk_loading_methodSPRING
flow_control_deviceDISK
maximum_operating_temp125.0 FAHRENHEIT SINGLE RESPONSE DEGF
valve_operation_methodMANUAL
media_for_which_designedWATER, FRESH SINGLE RESPONSE
NSN4820-00-289-1857
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS SIZE: — · — · — PN: 71S102 · 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: UNTHREADED INTERNAL PIPE FIRST END
CONNECTION STYLE: SOCKET FIRST END
OPERATING PRESSURE: 100.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
ADJUSTABLE PRESSURE RANGE: +30.0 TO 75.0 POUNDS PER SQUARE INCH LBS
VALVE OPERATION METHOD: MANUAL
MAXIMUM OPERATING TEMP: 125.0 FAHRENHEIT SINGLE RESPONSE DEGF
FEATURES PROVIDED: PRESSURE TIGHT OUTLET SIDE
MATERIAL: NICKEL ALLOY SEAT
TECHNICAL CHARACTERISTICS (FLIS)
CONNECTION TYPEUNTHREADED INTERNAL PIPE FIRST END
CONNECTION STYLESOCKET FIRST END
OPERATING PRESSURE100.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
ADJUSTABLE PRESSURE RANGE+30.0 TO 75.0 POUNDS PER SQUARE INCH LBS
VALVE OPERATION METHODMANUAL
MAXIMUM OPERATING TEMP125.0 FAHRENHEIT SINGLE RESPONSE DEGF
FEATURES PROVIDEDPRESSURE TIGHT OUTLET SIDE
MATERIALNICKEL ALLOY SEAT
NOMINAL PIPE SIZE ACCOMMODATED1.000 INCHES FIRST END IN
DISK LOADING METHODSPRING
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
NH66870Interchangeable
interchangeable cross-reference
interchangeable
VS407Interchangeable
interchangeable cross-reference
interchangeable
V472Interchangeable
interchangeable cross-reference
interchangeable
E523Interchangeable
Same NIIN cross-reference
interchangeable
E405ALT2Interchangeable
Same NIIN cross-reference
interchangeable
402042ALT1Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 71S102?
71S102 is a VALVE,SAFETY RELIEF.
What parts can replace 71S102?
There are 6 known substitutes for 71S102: NH66870, VS407, V472 and 3 more. Substitute compatibility should be verified for your specific system.
Is 71S102 still available?
71S102 is currently cancelled.
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