PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

79-3/4Valve,safety Relief

Aquatrol Inc · NSN 4820-00-289-0885 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-289-0885 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-289-0885. Primary manufacturer part number: 79-3/4.
Features
  • Valve,safety Relief — FSC 4820
  • Operating Pressure: 300.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
  • Maximum Operating Temp: 400.0 FAHRENHEIT SINGLE RESPONSE400.0 FAHRENHEIT SINGLE RESPONSE DEGF
  • Features Provided: PRESSURE TIGHT OUTLET SIDEPRESSURE TIGHT OUTLET SIDE
  • Nominal Thread Size: 0.750 INCHES SECOND END0.750 INCHES SECOND END IN
  • Connection Style: PLAIN,OPTIONAL END(PIPE) FIRST ENDPLAIN,OPTIONAL END(PIPE) FIRST END
  • Material: STEEL STEMCOPPER ALLOY FLOW CONTROL DEVICE
  • Material Document and Classification: QQ-C-390 FED SPEC SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICEQQ-C-390 FED SPEC SINGLE MATERIAL RESPONSE SEAT
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel Stemcopper Alloy Flow Control Device construction
General Description

The Valve,safety Relief, cataloged under National Stock Number 4820-00-289-0885, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Aquatrol Inc. Government technical data includes 30 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-00-289-0885
Primary Part Number79-3/4
Item NameValve,safety Relief
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerAquatrol Inc
StatusACTIVE
Operating Pressure300.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Maximum Operating Temp400.0 FAHRENHEIT SINGLE RESPONSE400.0 FAHRENHEIT SINGLE RESPONSE DEGF
Features ProvidedPRESSURE TIGHT OUTLET SIDEPRESSURE TIGHT OUTLET SIDE
Nominal Thread Size0.750 INCHES SECOND END0.750 INCHES SECOND END IN
Connection StylePLAIN,OPTIONAL END(PIPE) FIRST ENDPLAIN,OPTIONAL END(PIPE) FIRST END
MaterialSTEEL STEMCOPPER ALLOY FLOW CONTROL DEVICE
Material Document and ClassificationQQ-C-390 FED SPEC SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICEQQ-C-390 FED SPEC SINGLE MATERIAL RESPONSE SEAT
Flow Control DevicePOPPETPOPPET
Adjustable Pressure Range+61.0 TO 120.0 POUNDS PER SQUARE INCH+61.0 TO 120.0 POUNDS PER SQUARE INCH LBS
Nominal Thread Size0.750 INCHES FIRST END0.750 INCHES FIRST END IN
Media for Which DesignedWATER, FRESH SECOND RESPONSE
Disk Loading MethodSPRINGSPRING
Thread DirectionRIGHT-HAND SECOND ENDRIGHT-HAND SECOND END
Style DesignatorANGLE
Thread Series DesignatorNPT SECOND ENDNPT FIRST END
Material Document and ClassificationQQ-C-390 FED SPEC SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE
Connection TypeTHREADED INTERNAL PIPE FIRST ENDTHREADED INTERNAL PIPE FIRST END
Connection TypeTHREADED EXTERNAL PIPE SECOND ENDTHREADED EXTERNAL PIPE SECOND END
MaterialSTEEL STEM
MaterialCOPPER ALLOY FLOW CONTROL DEVICECOPPER ALLOY SEAT
MaterialCOPPER ALLOY SEATCOPPER ALLOY BODY
Nominal Pipe Size Accommodated0.750 INCHES SECOND END0.750 INCHES SECOND END IN
Valve Operation MethodAUTOMATICAUTOMATIC
Thread Series DesignatorNPT SECOND END
Media for Which DesignedWATER, FRESH SECOND RESPONSESTEAM FIRST RESPONSE
Connection StylePLAIN (PIPE) SECOND ENDPLAIN (PIPE) SECOND END
Thread Quantity Per Inch14 FIRST END14 FIRST END
Material Document and ClassificationQQ-C-390 FED SPEC SINGLE MATERIAL RESPONSE SEATQQ-C-390 FED SPEC SINGLE MATERIAL RESPONSE BODY
Thread DirectionRIGHT-HAND FIRST ENDRIGHT-HAND FIRST END
Thread Quantity Per Inch14 SECOND END14 SECOND END
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
7510-00-162-6157 INTERCHANGEABLE
Eraser,steel
2920-00-217-90587934 INTERCHANGEABLE
Lead,ignition,engine
Champion Aerospace Llc
5315-00-276-019397217 INTERCHANGEABLE
Pin,straight,headless
Fwd Seagrave Holdings Lp
4820-00-288-8602215176PC121 INTERCHANGEABLE
Cock,plug
Curtiss-Wright Electro-Mechanical Corporation Div Epd
6250-00-508-26008770871 INTERCHANGEABLE
Lampholder
Army, United States Department of the Dba Watervliet Arsenal Div Business Development
4520-00-862-167679 3-4 INTERCHANGEABLE
Valve,air Venting,steam
Itt Fluid Technology Corp Itt Mcdonnell and Miller
5998-01-035-72387-934 INTERCHANGEABLE
Circuit Card Assembly
Rogerson Kratos
2520-01-081-93847934 INTERCHANGEABLE
Transmission,hydraulic,vehicular
Funk Mfg Co Sub of Deere and Co
6625-01-257-94897934 INTERCHANGEABLE
Oscilloscope
Tektronix, Inc.
5340-01-374-55327934 INTERCHANGEABLE
Clamp,loop
Carlisle & Finch Co
Cross-Reference Index
Part NumberManufacturer
2601 Crane Co Div Valve Div (USA)
79-3/4 PRIMARY Aquatrol Inc (USA)
155-3/4IN PRIMARY Jayco Incorporated (USA)
Related Parts
7510-00-162-6157INTERCHANGEABLE
ERASER,STEEL
2920-00-217-9058INTERCHANGEABLE
LEAD,IGNITION,ENGINE
7934
5315-00-276-0193INTERCHANGEABLE
PIN,STRAIGHT,HEADLESS
97217
4820-00-288-8602INTERCHANGEABLE
COCK,PLUG
215176PC121
6250-00-508-2600INTERCHANGEABLE
LAMPHOLDER
8770871
4520-00-862-1676INTERCHANGEABLE
VALVE,AIR VENTING,STEAM
79 3-4
5998-01-035-7238INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
7-934
2520-01-081-9384INTERCHANGEABLE
TRANSMISSION,HYDRAULIC,VEHICULAR
7934
6625-01-257-9489INTERCHANGEABLE
OSCILLOSCOPE
7934
5340-01-374-5532INTERCHANGEABLE
CLAMP,LOOP
7934

Frequently Asked Questions

What is NSN 4820-00-289-0885?

NSN 4820-00-289-0885 is a Valve,safety Relief, manufactured by Aquatrol Inc, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-289-0885?

NSN 4820-00-289-0885 has 3 cross-referenced part numbers: 2601 (Crane Co Div Valve Div), 79-3/4 (Aquatrol Inc), 155-3/4IN (Jayco Incorporated).

What NSN replaces 4820-00-289-0885?

There are 10 known substitutes for 4820-00-289-0885: 7510-00-162-6157, 2920-00-217-9058, 5315-00-276-0193 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 79-3/4?

Key specifications for 79-3/4: Operating Pressure: 300.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS; Maximum Operating Temp: 400.0 FAHRENHEIT SINGLE RESPONSE400.0 FAHRENHEIT SINGLE RESPONSE DEGF; Features Provided: PRESSURE TIGHT OUTLET SIDEPRESSURE TIGHT OUTLET SIDE; Nominal Thread Size: 0.750 INCHES SECOND END0.750 INCHES SECOND END IN. 30 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com