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991738-1 — VALVE,REGULATING,FLUID PRESSURE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

991738-1: VALVE,REGULATING,FLUID PRESSURE.

VALVE,REGULATING,FLUID PRESSURE. Key specifications include filter: NOT INCLUDED, material: BRASS SEAT, body_style: TEE, temp_rating: -40.0 FAHRENHEIT MINIMUM AND 165.0 FAHRENHEIT MAXIMUM DEGF, regulation_type: 1ST STAGE MANUAL, 2ND STAGE AUTOMATIC, flow_control_device: DIAPHRAGM. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-491-6392, 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
991738-1
NSN: 4820-00-491-6392
FSC: 4820 — Valves, Nonpowered
CAGE: 82577 — RAYTHEON COMPANY DBA RAYTHEON (USA)
SPECIFICATIONS
filterNOT INCLUDED
materialBRASS SEAT
body_styleTEE
temp_rating-40.0 FAHRENHEIT MINIMUM AND 165.0 FAHRENHEIT MAXIMUM DEGF
regulation_type1ST STAGE MANUAL, 2ND STAGE AUTOMATIC
flow_control_deviceDIAPHRAGM
valve_loading_methodSPRING
manual_control_methodKNOB
outlet_pressure_range5.0 TO 300.0 CAMERA MOUNT
end_connection_quantity3
media_for_which_designedNITROGEN, GASEOUS
first_end_connection_typeTHREADED INTERNAL PIPE
NSN4820-00-491-6392
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 991738-1 · 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
•
FLOW CONTROL DEVICE: DIAPHRAGM
•
FIRST END THREAD DIRECTION: RIGHT-HAND
•
SECOND END RELATIONSHIP WITH FIRST END: IDENTICAL
•
BODY STYLE: TEE
•
REGULATION TYPE: 1ST STAGE MANUAL, 2ND STAGE AUTOMATIC
•
THIRD END RELATIONSHIP WITH PRECEDING ENDS: IDENTICAL WITH FIRST END
•
FIRST END STYLE DESIGNATOR: PLAIN
•
TEMP RATING: -40.0 FAHRENHEIT MINIMUM AND 165.0 FAHRENHEIT MAXIMUM DEGF
TECHNICAL CHARACTERISTICS
FLOW CONTROL DEVICEDIAPHRAGM
FIRST END THREAD DIRECTIONRIGHT-HAND
SECOND END RELATIONSHIP WITH FIRST ENDIDENTICAL
BODY STYLETEE
REGULATION TYPE1ST STAGE MANUAL, 2ND STAGE AUTOMATIC
THIRD END RELATIONSHIP WITH PRECEDING ENDSIDENTICAL WITH FIRST END
FIRST END STYLE DESIGNATORPLAIN
TEMP RATING-40.0 FAHRENHEIT MINIMUM AND 165.0 FAHRENHEIT MAXIMUM DEGF
END CONNECTION QUANTITY3
OUTLET PRESSURE RANGE5.0 TO 300.0 CAMERA MOUNT
OTHER ITEMS IN FSC 4820 — Valves, Nonpowered
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4820-00-000-0097 4820-00-001-0010 4820-00-001-0020 4820-00-001-0021 4820-00-001-0032 4820-00-001-0037 4820-00-001-0042 4820-00-001-1230
SUBSTITUTES & CROSS-REFERENCES 1
991738Reference document
Same NSN cross-reference
Reference document — Vendor item drawing reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — stock exhausted; no further procurementNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 991738-1?
991738-1 is a VALVE,REGULATING,FLUID PRESSURE.
What parts can replace 991738-1?
There is 1 known substitute for 991738-1: 991738. Substitute compatibility should be verified for your specific system.
What is the NSN for 991738-1?
991738-1 is cataloged in the U.S. Government catalog under NSN 4820-00-491-6392. This indicates validated use in U.S. government and defense supply chains.
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