PartsTable
Technical Data Sheet
1-2INSTMDISC ✓ 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,CHECK is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY 836 BODY, connection_type: THREADED INTERNAL PIPE ALL ENDS, connection_style: PLAIN, OPTIONAL END (PIPE) ALL ENDS, style_designator: STRAIGHT THRU, thread_direction: RIGHT-HAND ALL ENDS, mounting_position: HORIZONTAL OR VERTICAL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-223-5857, 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
1-2INSTMDISC
NSN: 4820-00-223-5857
FSC: 4820
CAGE: 12736 — CLAYTON MANUFACTURING COMPANY (USA)
SPECIFICATIONS
materialCOPPER ALLOY 836 BODY
connection_typeTHREADED INTERNAL PIPE ALL ENDS
connection_stylePLAIN, OPTIONAL END (PIPE) ALL ENDS
style_designatorSTRAIGHT THRU
thread_directionRIGHT-HAND ALL ENDS
mounting_positionHORIZONTAL OR VERTICAL
operating_pressure200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SECOND RESPONSE LBS
flow_control_deviceDISK
nominal_thread_size0.500 INCHES ALL ENDS IN
valve_operation_methodAUTOMATIC
media_for_which_designedWATER-OIL-GAS SECOND RESPONSE
thread_series_designatorNPT ALL ENDS
NSN4820-00-223-5857
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS SIZE: — · — · — PN: 1-2INSTMDISC · 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
VALVE OPERATION METHOD: AUTOMATIC
THREAD DIRECTION: RIGHT-HAND ALL ENDS
STYLE DESIGNATOR: STRAIGHT THRU
OPERATING PRESSURE: 200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SECOND RESPONSE LBS
THREAD SERIES DESIGNATOR: NPT ALL ENDS
MEDIA FOR WHICH DESIGNED: STEAM FIRST RESPONSE
NOMINAL THREAD SIZE: 0.500 INCHES ALL ENDS IN
TECHNICAL CHARACTERISTICS (FLIS)
VALVE OPERATION METHODAUTOMATIC
THREAD DIRECTIONRIGHT-HAND ALL ENDS
STYLE DESIGNATORSTRAIGHT THRU
OPERATING PRESSURE200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SECOND RESPONSE LBS
OPERATING PRESSURE125.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS
THREAD SERIES DESIGNATORNPT ALL ENDS
MEDIA FOR WHICH DESIGNEDSTEAM FIRST RESPONSE
NOMINAL THREAD SIZE0.500 INCHES ALL ENDS IN
MEDIA FOR WHICH DESIGNEDWATER-OIL-GAS SECOND RESPONSE
MATERIALCOPPER ALLOY 836 BODY
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
50338Interchangeable
Diaper,infant's
interchangeable
821LXInterchangeable
interchangeable cross-reference
interchangeable
SCB69784Interchangeable
interchangeable cross-reference
interchangeable
FBG015DC-BDONDNInterchangeable
interchangeable cross-reference
interchangeable
FBG015DC-BDONHNInterchangeable
interchangeable cross-reference
interchangeable
905 0338.4Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1-2INSTMDISC?
1-2INSTMDISC is a VALVE,CHECK.
What parts can replace 1-2INSTMDISC?
There are 8 known substitutes for 1-2INSTMDISC: 50338, 821LX, SCB69784 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1-2INSTMDISC?
1-2INSTMDISC is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-223-5857. This indicates validated use in U.S. government and defense supply chains.
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