PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

901001Valve,safety Relief

Liftking Manufacturing Corp · NSN 4820-01-656-2732 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-656-2732 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-656-2732. Primary manufacturer part number: 901001.
Features
  • Valve,safety Relief — FSC 4820
  • Nominal Thread Size: 1.0625 INCHES ALL ENDS IN
  • Style Designator: STRAIGHT THRU NOTE: TO BE USED FOR VALVE BODIES OF ONE SECTION ONLY.
  • Valve Operation Method: AUTOMATIC
  • Connection Type: THREADED INTERNAL PIPE FIRST END
  • Operating Pressure: 3500.00 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
  • Face to Face Distance: 3.95 INCHES IN
  • Seat Angle: 37.00 DEGREES SECOND END
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel Body construction
General Description

The Valve,safety Relief, cataloged under National Stock Number 4820-01-656-2732, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Liftking Manufacturing Corp. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-656-2732
Primary Part Number901001
Item NameValve,safety Relief
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerLiftking Manufacturing Corp
StatusACTIVE
Nominal Thread Size1.0625 INCHES ALL ENDS IN
Style DesignatorSTRAIGHT THRU NOTE: TO BE USED FOR VALVE BODIES OF ONE SECTION ONLY.
Valve Operation MethodAUTOMATIC
Connection TypeTHREADED INTERNAL PIPE FIRST END
Operating Pressure3500.00 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Face to Face Distance3.95 INCHES IN
Seat Angle37.00 DEGREES SECOND END
Minimum Operating Temp-40.0 FAHRENHEIT DEGF
Thread Quantity Per Inch12 ALL ENDS
Connection StylePLAIN,OPTIONAL END(PIPE) FIRST END
MaterialSTEEL BODY
Connection StyleFLARED (TUBE) SECOND END
Connection TypeTHREADED EXTERNAL TUBE SECOND END
Maximum Operating Temp250.00 FAHRENHEIT SINGLE RESPONSE DEGF
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
5820-00-089-499590100-1 INTERCHANGEABLE
Transmitting Set,radio
Continental Electronics Corp
5120-01-028-32813188897 INTERCHANGEABLE
Crimping Tool,terminal,hand
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
4820-01-417-6685901001 ASSEMBLY 901001-7 INTERCHANGEABLE
Valve,gate
Tri-Tec Manufacturing Llc
4810-01-419-2536901001-8 INTERCHANGEABLE
Valve,gate
Tri-Tec Manufacturing Llc
4810-01-432-2525901001-6 INTERCHANGEABLE
Valve,gate
Tri-Tec Manufacturing Llc
4510-01-482-3303 INTERCHANGEABLE
Faucet,single
4810-01-484-1384901001-4 INTERCHANGEABLE
Valve,gate
Tri-Tec Manufacturing Llc
4810-01-484-2527901001PL ASSY 901010-1-6 INTERCHANGEABLE
Actuator,electromechanical,rotar
Tri-Tec Manufacturing Llc
Cross-Reference Index
Part NumberManufacturer
901001 Liftking Manufacturing Corp (CAN)
28001-212 Vonberg Valve, Inc. (USA)
Related Parts
5820-00-089-4995INTERCHANGEABLE
TRANSMITTING SET,RADIO
90100-1
5120-01-028-3281INTERCHANGEABLE
CRIMPING TOOL,TERMINAL,HAND
3188897
4820-01-417-6685INTERCHANGEABLE
VALVE,GATE
901001 ASSEMBLY 901001-7
4810-01-419-2536INTERCHANGEABLE
VALVE,GATE
901001-8
4810-01-432-2525INTERCHANGEABLE
VALVE,GATE
901001-6
4510-01-482-3303INTERCHANGEABLE
FAUCET,SINGLE
4810-01-484-1384INTERCHANGEABLE
VALVE,GATE
901001-4
4810-01-484-2527INTERCHANGEABLE
ACTUATOR,ELECTROMECHANICAL,ROTAR
901001PL ASSY 901010-1-6

Frequently Asked Questions

What is NSN 4820-01-656-2732?

NSN 4820-01-656-2732 is a Valve,safety Relief, manufactured by Liftking Manufacturing Corp, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-656-2732?

NSN 4820-01-656-2732 has 2 cross-referenced part numbers: 901001 (Liftking Manufacturing Corp), 28001-212 (Vonberg Valve, Inc.).

What NSN replaces 4820-01-656-2732?

There are 8 known substitutes for 4820-01-656-2732: 5820-00-089-4995, 5120-01-028-3281, 4820-01-417-6685 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 901001?

Key specifications for 901001: Nominal Thread Size: 1.0625 INCHES ALL ENDS IN; Style Designator: STRAIGHT THRU NOTE: TO BE USED FOR VALVE BODIES OF ONE SECTION ONLY.; Valve Operation Method: AUTOMATIC; Connection Type: THREADED INTERNAL PIPE FIRST END. 16 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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