PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

20326P41MValve,safety Relief

Emerson Automation Solutions Final Control Us Lp Div Navy Product Team · NSN 4820-01-181-5599 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-181-5599 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-181-5599. Primary manufacturer part number: 20326P41M.
Features
  • Valve,safety Relief — FSC 4820
  • Material: STEEL BODY
  • Valve Operation Method: AUTOMATIC
  • Connection Type: FLANGE ALL ENDS
  • Valve Size: 1.000 INCHES IN
  • Flange Shape: ROUND WITH HOLES ALL ENDS
  • Second Connection Face to Centerline Distance: 3.250 INCHES IN
  • Bolt Hole Nominal Diameter: 0.625 INCHES ALL ENDS IN
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 4820-01-181-5599, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Emerson Automation Solutions Final Control Us Lp Div Navy Product Team. Government technical data includes 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-181-5599
Primary Part Number20326P41M
Item NameValve,safety Relief
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerEmerson Automation Solutions Final Control Us Lp Div Navy Product Team
StatusACTIVE
MaterialSTEEL BODY
Valve Operation MethodAUTOMATIC
Connection TypeFLANGE ALL ENDS
Valve Size1.000 INCHES IN
Flange ShapeROUND WITH HOLES ALL ENDS
Second Connection Face to Centerline Distance3.250 INCHES IN
Bolt Hole Nominal Diameter0.625 INCHES ALL ENDS IN
First Connection Face to Centerline Distance3.500 INCHES IN
Media for Which DesignedWATER-OIL-GAS SINGLE RESPONSE
MaterialNICKEL ALLOY STEM
Flow Control DeviceDISK
Adjustable Pressure Range+121.0 TO 135.0 POUNDS PER SQUARE INCH LBS
Nominal Thickness0.438 INCHES ALL ENDS IN
Operating Pressure260.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Bolt Circle Nominal Diameter3.125 INCHES ALL ENDS IN
Bolt Hole Quantity4 ALL ENDS
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5340-01-176-956707381002105 INTERCHANGEABLE
Lever,manual Control
Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
5325-01-191-6155140-22960 ITEM 10 INTERCHANGEABLE
Insert,screw Thread
Moog Inc. Dba Ampac-Isp Corp
5330-01-294-152920326 INTERCHANGEABLE
Gasket
Tulsa Winch, Inc.
5920-01-315-7400 INTERCHANGEABLE
Fuseholder,block
Cross-Reference Index
Part NumberManufacturer
20326P41M PRIMARY Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA)
CAMNN07SEE Dante Valve Company (USA)
20326 Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA)
20326P41M Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA)
CAMNN07SEE Danco Valve Company (USA)
Related Parts
5340-01-176-9567INTERCHANGEABLE
LEVER,MANUAL CONTROL
07381002105
5325-01-191-6155INTERCHANGEABLE
INSERT,SCREW THREAD
140-22960 ITEM 10
5330-01-294-1529INTERCHANGEABLE
GASKET
20326
5920-01-315-7400INTERCHANGEABLE
FUSEHOLDER,BLOCK

Frequently Asked Questions

What is NSN 4820-01-181-5599?

NSN 4820-01-181-5599 is a Valve,safety Relief, manufactured by Emerson Automation Solutions Final Control Us Lp Div Navy Product Team, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-181-5599?

NSN 4820-01-181-5599 has 5 cross-referenced part numbers: 20326P41M (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team), CAMNN07SEE (Dante Valve Company), 20326 (Anderson Greenwood Lp Dba Anderson Greenwood Crosby), 20326P41M (Anderson Greenwood Lp Dba Anderson Greenwood Crosby), CAMNN07SEE (Danco Valve Company).

What NSN replaces 4820-01-181-5599?

There are 4 known substitutes for 4820-01-181-5599: 5340-01-176-9567, 5325-01-191-6155, 5330-01-294-1529 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 20326P41M?

Key specifications for 20326P41M: Material: STEEL BODY; Valve Operation Method: AUTOMATIC; Connection Type: FLANGE ALL ENDS; Valve Size: 1.000 INCHES IN. 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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