PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

375-1Valve,check

Strataflo Products, Inc · NSN 4820-01-294-7210 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-294-7210 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-294-7210. Primary manufacturer part number: 375-1.
Features
  • Valve,check — FSC 4820
  • Style Designator: STRAIGHT THRU
  • Material: COPPER ALLOY STEM
  • Operating Pressure: 200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
  • Media for Which Designed: OIL, HYDRAULIC SINGLE RESPONSE
  • Nominal Thread Size: 1.000 INCHES ALL ENDS IN
  • Thread Series Designator: NPT ALL ENDS
  • Material: COPPER ALLOY BODY
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Copper Alloy Stem construction
General Description

The Valve,check, cataloged under National Stock Number 4820-01-294-7210, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Strataflo Products, Inc. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 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: Cancelled.

Technical Specifications
ParameterValue
NSN4820-01-294-7210
Primary Part Number375-1
Item NameValve,check
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerStrataflo Products, Inc
StatusCANCELLED
Style DesignatorSTRAIGHT THRU
MaterialCOPPER ALLOY STEM
Operating Pressure200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Media for Which DesignedOIL, HYDRAULIC SINGLE RESPONSE
Nominal Thread Size1.000 INCHES ALL ENDS IN
Thread Series DesignatorNPT ALL ENDS
MaterialCOPPER ALLOY BODY
Valve Operation MethodAUTOMATIC
Connection TypeTHREADED INTERNAL PIPE ALL ENDS
Thread DirectionRIGHT-HAND ALL ENDS
Mounting PositionHORIZONTAL OR VERTICAL
MaterialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR FLOW CONTROL DEVICE
Flow Control DevicePOPPET
Connection StylePLAIN, OPTIONAL END (PIPE) ALL ENDS
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
6625-00-089-9181PIDA-E75-AIS INTERCHANGEABLE
Ammeter
La Marche Mfg Co. Dba La Marche
6635-00-237-9956300100 INTERCHANGEABLE
Cooler and Heater,x-Ray Film Pro
Illinois Tool Works, Inc. Div Magnaflux
5330-00-409-4631 INTERCHANGEABLE
Seal,plain Encased
5930-00-549-0308682324PC4 INTERCHANGEABLE
Switch,toggle
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
1680-00-605-85572109 INTERCHANGEABLE
Seat Assy,troop
Cr Daniels Inc
5990-00-636-4108 INTERCHANGEABLE
Synchro,receiver
5905-00-689-9543300-100 INTERCHANGEABLE
Resistor,variable,wire Wound,non
Vernitron Corp Vrn International Div
4730-00-842-1138 INTERCHANGEABLE
Adapter,straight,tube to Hose
5340-00-852-6778P375 INTERCHANGEABLE
Plug,protective,dust and Moistur
Heyco Inc Dba Heyco Products
4730-00-876-55403751-24D INTERCHANGEABLE
Elbow,tube
Transdigm Inc Div Adelwiggins Group
Cross-Reference Index
Part NumberManufacturer
375-1 PRIMARY Strataflo Products, Inc (USA)
P375 Strataflo Products, Inc (USA)
300-100 Strataflo Products, Inc (USA)
375-1 NPT PRIMARY Strataflo Products, Inc (USA)
Related Parts
6625-00-089-9181INTERCHANGEABLE
AMMETER
PIDA-E75-AIS
6635-00-237-9956INTERCHANGEABLE
COOLER AND HEATER,X-RAY FILM PRO
300100
5330-00-409-4631INTERCHANGEABLE
SEAL,PLAIN ENCASED
5930-00-549-0308INTERCHANGEABLE
SWITCH,TOGGLE
682324PC4
1680-00-605-8557INTERCHANGEABLE
SEAT ASSY,TROOP
2109
5990-00-636-4108INTERCHANGEABLE
SYNCHRO,RECEIVER
5905-00-689-9543INTERCHANGEABLE
RESISTOR,VARIABLE,WIRE WOUND,NON
300-100
4730-00-842-1138INTERCHANGEABLE
ADAPTER,STRAIGHT,TUBE TO HOSE
5340-00-852-6778INTERCHANGEABLE
PLUG,PROTECTIVE,DUST AND MOISTUR
P375
4730-00-876-5540INTERCHANGEABLE
ELBOW,TUBE
3751-24D
6105-01-020-0001INTERCHANGEABLE
MOTOR,ALTERNATING CURRENT
3751
5999-01-070-7495INTERCHANGEABLE
MOUNTING PAD,ELECTRICAL-ELECTRON

Frequently Asked Questions

What is NSN 4820-01-294-7210?

NSN 4820-01-294-7210 is a Valve,check, manufactured by Strataflo Products, Inc, classified under FSC 4820 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4820-01-294-7210?

NSN 4820-01-294-7210 has 4 cross-referenced part numbers: 375-1 (Strataflo Products, Inc), P375 (Strataflo Products, Inc), 300-100 (Strataflo Products, Inc), 375-1 NPT (Strataflo Products, Inc).

What NSN replaces 4820-01-294-7210?

There are 12 known substitutes for 4820-01-294-7210: 6625-00-089-9181, 6635-00-237-9956, 5330-00-409-4631 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 375-1?

Key specifications for 375-1: Style Designator: STRAIGHT THRU; Material: COPPER ALLOY STEM; Operating Pressure: 200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS; Media for Which Designed: OIL, HYDRAULIC SINGLE RESPONSE. 14 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4820-01-294-7210 still in active supply?

NSN 4820-01-294-7210 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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