PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 3-4 FIG 55
3-4 FIG 55 ✓ 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

CAPACITOR,VARIABLE,MICA DIELECTR. Key specifications include material: GRAPHITE SEAT, stem_type: RISING, valve_size: 0.750 INCHES IN, bonnet_type: INSIDE SCREW, connection_type: THREADED INTERNAL PIPE, features_provided: BONNET PACKING. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-288-7567, 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
3-4 FIG 55
NSN: 4820-00-288-7567
FSC: 4820
CAGE: 63686 — THE WALWORTH COMPANY (USA)
SPECIFICATIONS
materialGRAPHITE SEAT
stem_typeRISING
valve_size0.750 INCHES IN
bonnet_typeINSIDE SCREW
connection_typeTHREADED INTERNAL PIPE
features_providedBONNET PACKING
nominal_thread_size0.750 INCHES IN
valve_operation_methodMANUAL
bonnet_attachment_methodUNION
thread_series_designatorNPT
nondefinitive_spec/std_data2;JST1;JCLA TYPE
operating_pressure_and_type125.0 POUNDS PER SQUARE INCH (PSI) STEAM MAXIMUM REQUIRED AND 200.0 POUNDS PER SQUARE INCH (PSI) WATER AND OTHER LIQUIDS MAXIMUM REQUIRED LOCATION NOT OTHERWISE SPECIFIED LBS
NSN4820-00-288-7567
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 3-4 FIG 55 · 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 DOCUMENT AND CLASSIFICATION: ASTM B-62 ASSN STD SINGLE MATERIAL RESPONSE BODY
•
NOMINAL THREAD SIZE: 0.750 INCHES IN
•
MAXIMUM OPERATING TEMP AND MEDIA FOR WHICH DESIGNED: 406.0 FAHRENHEIT STEAM AND 150.0 FAHRENHEIT WATER-OIL-GAS DEGF
•
STEM TYPE: RISING
•
INLET RELATIONSHIP WITH OUTLET: IDENTICAL
•
SUPPLEMENTARY FEATURES: THIS ITEM HAS BEEN REVIEWED FOR ASBESTOS MATERIAL. THE CURRENT APPROVED SOURCES 82666 HAVE INDICATED THEIR PART NUMBER CONTAINED ASBESTOS PRIOR TO 1984. THEY CONTINUE TO MANUFACTURE THE SAME PART NUMBER WITHOUT ASBESTOS MATERIAL AFTER 1984
•
THREAD SERIES DESIGNATOR: NPT
•
OPERATING PRESSURE AND TYPE: 125.0 POUNDS PER SQUARE INCH (PSI) STEAM MAXIMUM REQUIRED AND 200.0 POUNDS PER SQUARE INCH (PSI) WATER AND OTHER LIQUIDS MAXIMUM REQUIRED LOCATION NOT OTHERWISE SPECIFIED LBS
TYPICAL APPLICATIONS
  • RAID cache protection during power loss events
  • Write-back cache enablement for storage controllers
  • Enterprise server data integrity assurance
  • Hot-swap battery/capacitor replacement in production
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL DOCUMENT AND CLASSIFICATIONASTM B-62 ASSN STD SINGLE MATERIAL RESPONSE BODY
NOMINAL THREAD SIZE0.750 INCHES IN
MAXIMUM OPERATING TEMP AND MEDIA FOR WHICH DESIGNED406.0 FAHRENHEIT STEAM AND 150.0 FAHRENHEIT WATER-OIL-GAS DEGF
STEM TYPERISING
INLET RELATIONSHIP WITH OUTLETIDENTICAL
SUPPLEMENTARY FEATURESTHIS ITEM HAS BEEN REVIEWED FOR ASBESTOS MATERIAL. THE CURRENT APPROVED SOURCES 82666 HAVE INDICATED THEIR PART NUMBER CONTAINED ASBESTOS PRIOR TO 1984. THEY CONTINUE TO MANUFACTURE THE SAME PART NUMBER WITHOUT ASBESTOS MATERIAL AFTER 1984
THREAD SERIES DESIGNATORNPT
OPERATING PRESSURE AND TYPE125.0 POUNDS PER SQUARE INCH (PSI) STEAM MAXIMUM REQUIRED AND 200.0 POUNDS PER SQUARE INCH (PSI) WATER AND OTHER LIQUIDS MAXIMUM REQUIRED LOCATION NOT OTHERWISE SPECIFIED LBS
MATERIALCOPPER ALLOY 836 BODY
NONDEFINITIVE SPEC/STD DATA2;JST1;JCLA TYPE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
B10734Interchangeable
interchangeable cross-reference
interchangeable
2700-1INInterchangeable
interchangeable cross-reference
interchangeable
47UInterchangeable
interchangeable cross-reference
interchangeable
AKFS07-100Interchangeable
interchangeable cross-reference
interchangeable
B107.1 TY3Interchangeable
interchangeable cross-reference
interchangeable
B107.1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 3-4 FIG 55?
3-4 FIG 55 is a CAPACITOR,VARIABLE,MICA DIELECTR.
What parts can replace 3-4 FIG 55?
There are 14 known substitutes for 3-4 FIG 55: B10734, 2700-1IN, 47U and 11 more. Substitute compatibility should be verified for your specific system.
Is 3-4 FIG 55 still available?
3-4 FIG 55 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026