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Technical Data Sheet

S8-1/2IN — Technical Data Sheet

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· 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,CHECK is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY BODY, connection_type: THREADED EXTERNAL HOSE FIRST END, connection_style: PLAIN (HOSE) FIRST END, special_features: INSIDE OR OUTSIDE USE; NOT SUITABLE FOR FROST FREE HYDRANTS; SERRATED FINGER GRIP, style_designator: STRAIGHT THRU, thread_direction: RIGHT-HAND SECOND END. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-355-0374, 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
S8-1/2IN
NSN: 4820-01-355-0374
FSC: 4820
CAGE: 79227 — WATTS REGULATOR COMPANY (USA)
SPECIFICATIONS
materialCOPPER ALLOY BODY
connection_typeTHREADED EXTERNAL HOSE FIRST END
connection_stylePLAIN (HOSE) FIRST END
special_featuresINSIDE OR OUTSIDE USE; NOT SUITABLE FOR FROST FREE HYDRANTS; SERRATED FINGER GRIP
style_designatorSTRAIGHT THRU
thread_directionRIGHT-HAND SECOND END
mounting_positionHORIZONTAL OR VERTICAL
operating_pressure125.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
disk_loading_methodSPRING
nominal_thread_size0.500 INCHES SECOND END IN
supplementary_featuresFLOW CONTROL DEVICE: DIAPHRAGM
valve_operation_methodAUTOMATIC
NSN4820-01-355-0374
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS SIZE: — · — · — PN: S8-1/2IN · 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
MATERIAL: COPPER ALLOY BODY
THREAD QUANTITY PER INCH: 11-1/2 SECOND END
CONNECTION TYPE: THREADED INTERNAL HOSE SECOND END
STYLE DESIGNATOR: STRAIGHT THRU
CONNECTION STYLE: PLAIN (HOSE) FIRST END
MOUNTING POSITION: HORIZONTAL OR VERTICAL
NOMINAL THREAD SIZE: 0.500 INCHES SECOND END IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALCOPPER ALLOY BODY
THREAD QUANTITY PER INCH11-1/2 SECOND END
CONNECTION TYPETHREADED INTERNAL HOSE SECOND END
CONNECTION TYPETHREADED EXTERNAL HOSE FIRST END
STYLE DESIGNATORSTRAIGHT THRU
CONNECTION STYLEPLAIN (HOSE) FIRST END
MOUNTING POSITIONHORIZONTAL OR VERTICAL
NOMINAL THREAD SIZE0.500 INCHES SECOND END IN
VALVE OPERATION METHODAUTOMATIC
THREAD SERIES DESIGNATORNH SECOND END
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
177039-65Interchangeable
interchangeable cross-reference
interchangeable
F12Interchangeable
interchangeable cross-reference
interchangeable
F12X1Interchangeable
interchangeable cross-reference
interchangeable
G322-050-011Interchangeable
interchangeable cross-reference
interchangeable
S8Interchangeable
interchangeable cross-reference
interchangeable
155971G1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is S8-1/2IN?
S8-1/2IN is a VALVE,CHECK.
What parts can replace S8-1/2IN?
There are 19 known substitutes for S8-1/2IN: 177039-65, F12, F12X1 and 16 more. Substitute compatibility should be verified for your specific system.
What is the NSN for S8-1/2IN?
S8-1/2IN is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-355-0374. This indicates validated use in U.S. government and defense supply chains.
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