PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

S-125Valve,shuttle

Humphrey Products Co · NSN 4820-01-156-9859 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-156-9859 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-156-9859. Primary manufacturer part number: S-125.
Features
  • Valve,shuttle — FSC 4820
  • Flow Control Device: PISTON
  • Material: ALUMINUM ALLOY OVERALL
  • Valve Operation Method: AUTOMATIC
  • Thread Series Designator: NPT ALL ENDS
  • Connection Style: PLAIN,OPTIONAL END(PIPE) ALL ENDS
  • Thread Direction: RIGHT-HAND ALL ENDS
  • Nominal Thread Size: 0.125 INCHES ALL ENDS IN
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Aluminum Alloy Overall construction
General Description

The Valve,shuttle, cataloged under National Stock Number 4820-01-156-9859, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Humphrey Products Co. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-156-9859
Primary Part NumberS-125
Item NameValve,shuttle
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerHumphrey Products Co
StatusACTIVE
Flow Control DevicePISTON
MaterialALUMINUM ALLOY OVERALL
Valve Operation MethodAUTOMATIC
Thread Series DesignatorNPT ALL ENDS
Connection StylePLAIN,OPTIONAL END(PIPE) ALL ENDS
Thread DirectionRIGHT-HAND ALL ENDS
Nominal Thread Size0.125 INCHES ALL ENDS IN
Connection TypeTHREADED INTERNAL PIPE ALL ENDS
Style DesignatorSTRAIGHT THRU
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
5340-00-329-4419S125 INTERCHANGEABLE
Button,plug
Egs Electrical Group Appleton Div
5330-00-345-2265S12-5 INTERCHANGEABLE
Retainer,packing
Arkwin Industries, Inc. Dba Arkwin Industries Inc
5930-00-412-1056 INTERCHANGEABLE
Switch,knife
5998-00-460-04486723-00386 INTERCHANGEABLE
Circuit Card Assembly
Bae Systems (operations) Limited
5930-00-486-7052 INTERCHANGEABLE
Adapter,switch Actuator
5305-00-576-698760X3210 INTERCHANGEABLE
Screw,cap,hexagon Head
Napco International Llc Dba Napco International Inc
5930-00-661-0693S1-25 INTERCHANGEABLE
Switch,sensitive
Safran Power Usa, Llc
5999-00-953-1716 INTERCHANGEABLE
Heater,thermal Release
3460-01-355-6193S-125 INTERCHANGEABLE
Sleeve,expansion Mandrel
Sunnen Products Co
4730-01-526-6956S-125 INTERCHANGEABLE
Elbow,hose
Uni Tek Mfg Co Inc
Cross-Reference Index
Part NumberManufacturer
S-125 PRIMARY Humphrey Products Co (USA)
Related Parts
5340-00-329-4419INTERCHANGEABLE
BUTTON,PLUG
S125
5330-00-345-2265INTERCHANGEABLE
RETAINER,PACKING
S12-5
5930-00-412-1056INTERCHANGEABLE
SWITCH,KNIFE
5998-00-460-0448INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
6723-00386
5930-00-486-7052INTERCHANGEABLE
ADAPTER,SWITCH ACTUATOR
5305-00-576-6987INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
60X3210
5930-00-661-0693INTERCHANGEABLE
SWITCH,SENSITIVE
S1-25
5999-00-953-1716INTERCHANGEABLE
HEATER,THERMAL RELEASE
3460-01-355-6193INTERCHANGEABLE
SLEEVE,EXPANSION MANDREL
S-125
4730-01-526-6956INTERCHANGEABLE
ELBOW,HOSE
S-125

Frequently Asked Questions

What is NSN 4820-01-156-9859?

NSN 4820-01-156-9859 is a Valve,shuttle, manufactured by Humphrey Products Co, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-156-9859?

NSN 4820-01-156-9859 has 1 cross-referenced part number: S-125 (Humphrey Products Co).

What NSN replaces 4820-01-156-9859?

There are 10 known substitutes for 4820-01-156-9859: 5340-00-329-4419, 5330-00-345-2265, 5930-00-412-1056 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of S-125?

Key specifications for S-125: Flow Control Device: PISTON; Material: ALUMINUM ALLOY OVERALL; Valve Operation Method: AUTOMATIC; Thread Series Designator: NPT ALL ENDS. 9 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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