PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

27EC34M-140/S4-10PSIValve,safety Relief

Curtiss-Wright Flow Control Corporation Dba Farris Engineering Div Curtiss-Wright Valves Division- Farris · NSN 4820-01-506-4501 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-506-4501 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-506-4501. Primary manufacturer part number: 27EC34M-140/S4-10PSI.
Features
  • Valve,safety Relief — FSC 4820
  • 5 verified cross-references
  • Primary manufacturer: Curtiss-Wright Flow Control Corporation Dba Farris Engineering Div Curtiss-Wright Valves Division- Farris
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Valve,safety Relief, cataloged under National Stock Number 4820-01-506-4501, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Curtiss-Wright Flow Control Corporation Dba Farris Engineering Div Curtiss-Wright Valves Division- Farris. This item has 5 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-506-4501
Primary Part Number27EC34M-140/S4-10PSI
Item NameValve,safety Relief
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerCurtiss-Wright Flow Control Corporation Dba Farris Engineering Div Curtiss-Wright Valves Division- Farris
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
3110-00-100-02851B3921 INTERCHANGEABLE
Cone and Rollers,tapered Roller
Caterpillar Inc Div Caterpillar Defense
2010-00-213-0749 INTERCHANGEABLE
Staves,bearing
5365-01-432-146530159 INTERCHANGEABLE
Spacer,ring
Woodward, Inc.
4820-01-506-4497330081-010NM INTERCHANGEABLE
Stem,fluid Valve
Curtiss-Wright Flow Control Corporation Dba Farris Engineering Div Curtiss-Wright Valves Division- Farris
4820-01-506-4509330077-010 INTERCHANGEABLE
O-Ring Retainer L S
Curtiss-Wright Flow Control Corporation Dba Farris Engineering Div Curtiss-Wright Valves Division- Farris
4820-01-506-4522330074-010NM INTERCHANGEABLE
O-Ring Retainer
Curtiss-Wright Flow Control Corporation Dba Farris Engineering Div Curtiss-Wright Valves Division- Farris
4820-01-506-452830156 INTERCHANGEABLE
Disk,valve
Curtiss-Wright Flow Control Corporation Dba Farris Engineering Div Curtiss-Wright Valves Division- Farris
Cross-Reference Index
Part NumberManufacturer
27EC34M-140/S4-10PSI Curtiss-Wright Flow Control Corporation Dba Curtiss-Wright Flow Control Co Div Target Rock Division (USA)
30159 Curtiss-Wright Flow Control Corporation Dba Curtiss-Wright Flow Control Co Div Target Rock Division (USA)
27EC34M-140/S4-10PSI PRIMARY Curtiss-Wright Flow Control Corporation Dba Farris Engineering Div Curtiss-Wright Valves Division- Farris (USA)
27EC34M-140/S4- Curtiss-Wright Flow Control Corporation Dba Curtiss-Wright Flow Control Co Div Target Rock Division (USA)
30159 REV. B Curtiss-Wright Flow Control Corporation Dba Curtiss-Wright Flow Control Co Div Target Rock Division (USA)
Related Parts
3110-00-100-0285INTERCHANGEABLE
CONE AND ROLLERS,TAPERED ROLLER
1B3921
2010-00-213-0749INTERCHANGEABLE
STAVES,BEARING
5365-01-432-1465INTERCHANGEABLE
SPACER,RING
30159
4820-01-506-4497INTERCHANGEABLE
STEM,FLUID VALVE
330081-010NM
4820-01-506-4509INTERCHANGEABLE
O-RING RETAINER L S
330077-010
4820-01-506-4522INTERCHANGEABLE
O-RING RETAINER
330074-010NM
4820-01-506-4528INTERCHANGEABLE
DISK,VALVE
30156

Frequently Asked Questions

What is NSN 4820-01-506-4501?

NSN 4820-01-506-4501 is a Valve,safety Relief, manufactured by Curtiss-Wright Flow Control Corporation Dba Farris Engineering Div Curtiss-Wright Valves Division- Farris, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-506-4501?

NSN 4820-01-506-4501 has 5 cross-referenced part numbers: 27EC34M-140/S4-10PSI (Curtiss-Wright Flow Control Corporation Dba Curtiss-Wright Flow Control Co Div Target Rock Division), 30159 (Curtiss-Wright Flow Control Corporation Dba Curtiss-Wright Flow Control Co Div Target Rock Division), 27EC34M-140/S4-10PSI (Curtiss-Wright Flow Control Corporation Dba Farris Engineering Div Curtiss-Wright Valves Division- Farris), 27EC34M-140/S4- (Curtiss-Wright Flow Control Corporation Dba Curtiss-Wright Flow Control Co Div Target Rock Division), 30159 REV. B (Curtiss-Wright Flow Control Corporation Dba Curtiss-Wright Flow Control Co Div Target Rock Division).

What NSN replaces 4820-01-506-4501?

There are 7 known substitutes for 4820-01-506-4501: 3110-00-100-0285, 2010-00-213-0749, 5365-01-432-1465 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 27EC34M-140/S4-10PSI?

Key specifications for 27EC34M-140/S4-10PSI: Part Name Assigned by Controlling Agency: 1.0 X 1.5 INCH RELIEF VALVE IN. 1 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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