PartsTable
Technical Data Sheet
49F9798-57 ✓ 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

HOLDER,ELECTRICAL CONTACT BRUSH. Key specifications include material: STEEL CORROSION RESISTING BODY, seat_angle: 37.0 DEGREES FIRST END, thread_class: 3A FIRST END A, connection_style: BEADED (HOSE) SECOND END, style_designator: STRAIGHT THRU, thread_direction: RIGHT-HAND FIRST END. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-032-8164, 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
49F9798-57
NSN: 4820-00-032-8164
FSC: 4820
CAGE: 88042 — ARMY AIR FORCE DRAWINGS UNDER CUSTODIANSHIP OF THE AIR FORCE
SPECIFICATIONS
materialSTEEL CORROSION RESISTING BODY
seat_angle37.0 DEGREES FIRST END
thread_class3A FIRST END A
connection_styleBEADED (HOSE) SECOND END
style_designatorSTRAIGHT THRU
thread_directionRIGHT-HAND FIRST END
flow_control_devicePOPPET
nominal_thread_size0.750 INCHES FIRST END IN
valve_operation_methodAUTOMATIC
thread_series_designatorUNF FIRST END
nominal_outside_diameter_hose_accommodated0.500 INCHES SECOND END IN
nominal_outside_diameter_tube_accommodated0.500 INCHES FIRST END IN
NSN4820-00-032-8164
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS SIZE: — · — · — PN: 49F9798-57 · 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
THREAD CLASS: 3A FIRST END A
FLOW CONTROL DEVICE: POPPET
CONNECTION STYLE: FLARED (TUBE) FIRST END
THREAD DIRECTION: RIGHT-HAND FIRST END
VALVE OPERATION METHOD: AUTOMATIC
STYLE DESIGNATOR: STRAIGHT THRU
NOMINAL THREAD SIZE: 0.750 INCHES FIRST END IN
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.500 INCHES FIRST END IN
TECHNICAL CHARACTERISTICS (FLIS)
THREAD CLASS3A FIRST END A
FLOW CONTROL DEVICEPOPPET
CONNECTION STYLEFLARED (TUBE) FIRST END
THREAD DIRECTIONRIGHT-HAND FIRST END
VALVE OPERATION METHODAUTOMATIC
STYLE DESIGNATORSTRAIGHT THRU
NOMINAL THREAD SIZE0.750 INCHES FIRST END IN
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.500 INCHES FIRST END IN
MATERIALSTEEL CORROSION RESISTING BODY
MATERIALSTEEL CORROSION RESISTING FLOW CONTROL DEVICE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
7901-3Interchangeable
interchangeable cross-reference
interchangeable
7901-8AFInterchangeable
interchangeable cross-reference
interchangeable
49F9798-57Interchangeable
interchangeable cross-reference
interchangeable
C15A3Interchangeable
interchangeable cross-reference
interchangeable
31471Interchangeable
interchangeable cross-reference
interchangeable
23700004Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 49F9798-57?
49F9798-57 is a HOLDER,ELECTRICAL CONTACT BRUSH.
What parts can replace 49F9798-57?
There are 10 known substitutes for 49F9798-57: 7901-3, 7901-8AF, 49F9798-57 and 7 more. Substitute compatibility should be verified for your specific system.
Is 49F9798-57 still available?
49F9798-57 is currently cancelled.
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