PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

123A-7PL4355Valve,check

Admiral Valve Llc Dba Cpv Manufacturing · NSN 4820-01-227-1001 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-227-1001 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-227-1001. Primary manufacturer part number: 123A-7PL4355.
Features
  • Valve,check — FSC 4820
  • Connection Style: PLAIN (PIPE) ALL ENDS
  • Maximum Operating Temp: 225.0 FAHRENHEIT SINGLE RESPONSE DEGF
  • Disk Loading Method: SPRING
  • Flow Control Device: DISK
  • Thread Direction: RIGHT-HAND ALL ENDS
  • Mounting Position: HORIZONTAL OR VERTICAL
  • Nominal Thread Size: 1.500 INCHES ALL ENDS IN
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Copper Alloy Body construction
General Description

The Valve,check, cataloged under National Stock Number 4820-01-227-1001, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Admiral Valve Llc Dba Cpv Manufacturing. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-227-1001
Primary Part Number123A-7PL4355
Item NameValve,check
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerAdmiral Valve Llc Dba Cpv Manufacturing
StatusACTIVE
Connection StylePLAIN (PIPE) ALL ENDS
Maximum Operating Temp225.0 FAHRENHEIT SINGLE RESPONSE DEGF
Disk Loading MethodSPRING
Flow Control DeviceDISK
Thread DirectionRIGHT-HAND ALL ENDS
Mounting PositionHORIZONTAL OR VERTICAL
Nominal Thread Size1.500 INCHES ALL ENDS IN
Style DesignatorSTRAIGHT THRU
Thread Series DesignatorNPT ALL ENDS
MaterialCOPPER ALLOY BODY
Media for Which DesignedWATER-OIL-GAS SINGLE RESPONSE
Valve Operation MethodAUTOMATIC
Operating Pressure6000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Connection TypeTHREADED EXTERNAL PIPE ALL ENDS
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
3439-00-060-2577 INTERCHANGEABLE
Heating Unit,electric Soldering
5990-00-111-860112-37 INTERCHANGEABLE
Synchro,control Transformer
Carbonara Labs Inc
6210-00-249-4581 INTERCHANGEABLE
Lens,light
4920-00-494-75361237 INTERCHANGEABLE
Extension,lead Unshielded
Mission Systems Davenport Inc.
2520-00-766-22591669326 INTERCHANGEABLE
Clutch Assembly,friction
Chrysler Realty Company Llc Dba Daimler Chrysler
5930-00-883-6684684-536-9101 INTERCHANGEABLE
Switch,pressure
Honeywell International Inc. Dba Honeywell International Div Aerospace - Phoenix
3110-00-899-2952 INTERCHANGEABLE
Retainer,ball,bearing
5945-00-907-3187414863-2 INTERCHANGEABLE
Relay,solid State
Raytheon Company Dba Raytheon
5895-01-129-8465182D1011-9 INTERCHANGEABLE
Panel,indicator
West Electronics Inc
5975-01-139-38601237 INTERCHANGEABLE
Bushing,strain Relief,cable
Heyco Inc Dba Heyco Products
Cross-Reference Index
Part NumberManufacturer
B8957XPL3210 Admiral Valve Llc Dba Cpv Manufacturing (USA)
123A-7PL4355 PRIMARY Admiral Valve Llc Dba Cpv Manufacturing (USA)
123-7PL3209 Admiral Valve Llc Dba Cpv Manufacturing (USA)
123-7PL3210 Admiral Valve Llc Dba Cpv Manufacturing (USA)
123-7 Admiral Valve Llc Dba Cpv Manufacturing (USA)
Related Parts
3439-00-060-2577INTERCHANGEABLE
HEATING UNIT,ELECTRIC SOLDERING
5990-00-111-8601INTERCHANGEABLE
SYNCHRO,CONTROL TRANSFORMER
12-37
6210-00-249-4581INTERCHANGEABLE
LENS,LIGHT
4920-00-494-7536INTERCHANGEABLE
EXTENSION,LEAD UNSHIELDED
1237
2520-00-766-2259INTERCHANGEABLE
CLUTCH ASSEMBLY,FRICTION
1669326
5930-00-883-6684INTERCHANGEABLE
SWITCH,PRESSURE
684-536-9101
3110-00-899-2952INTERCHANGEABLE
RETAINER,BALL,BEARING
5945-00-907-3187INTERCHANGEABLE
RELAY,SOLID STATE
414863-2
5895-01-129-8465INTERCHANGEABLE
PANEL,INDICATOR
182D1011-9
5975-01-139-3860INTERCHANGEABLE
BUSHING,STRAIN RELIEF,CABLE
1237
6515-01-156-3390INTERCHANGEABLE
SURGICAL PACK,DISPOSABLE
5930-01-303-8535INTERCHANGEABLE
SWITCH,ROTARY
10384

Frequently Asked Questions

What is NSN 4820-01-227-1001?

NSN 4820-01-227-1001 is a Valve,check, manufactured by Admiral Valve Llc Dba Cpv Manufacturing, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-227-1001?

NSN 4820-01-227-1001 has 5 cross-referenced part numbers: B8957XPL3210 (Admiral Valve Llc Dba Cpv Manufacturing), 123A-7PL4355 (Admiral Valve Llc Dba Cpv Manufacturing), 123-7PL3209 (Admiral Valve Llc Dba Cpv Manufacturing), 123-7PL3210 (Admiral Valve Llc Dba Cpv Manufacturing), 123-7 (Admiral Valve Llc Dba Cpv Manufacturing).

What NSN replaces 4820-01-227-1001?

There are 12 known substitutes for 4820-01-227-1001: 3439-00-060-2577, 5990-00-111-8601, 6210-00-249-4581 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 123A-7PL4355?

Key specifications for 123A-7PL4355: Connection Style: PLAIN (PIPE) ALL ENDS; Maximum Operating Temp: 225.0 FAHRENHEIT SINGLE RESPONSE DEGF; Disk Loading Method: SPRING; Flow Control Device: DISK. 15 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