PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

EHOYM-3170-NF2-TBValve,regulating,fluid Pressure

Metrex Valve Corp. Dba Metrex Valve Corp · NSN 4820-01-515-8319 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-515-8319 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-515-8319. Primary manufacturer part number: EHOYM-3170-NF2-TB.
Features
  • Valve,regulating,fluid Pressure — FSC 4820
  • Body Style: STRAIGHT THRU
  • Material: COPPER ALLOY 922 STEM
  • Material Document and Classification: QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE
  • Material Document and Classification: ASTM B61 ASSN STD SINGLE MATERIAL RESPONSE STEM
  • Material: NICKEL ALLOY FLOW CONTROL DEVICE
  • Valve Stem Design: DOUBLE SEAT
  • End Connection Spec/std: MIL-F-20042C
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Copper Alloy 922 Stem construction
General Description

The Valve,regulating,fluid Pressure, cataloged under National Stock Number 4820-01-515-8319, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Metrex Valve Corp. Dba Metrex Valve Corp. Government technical data includes 18 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. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-515-8319
Primary Part NumberEHOYM-3170-NF2-TB
Item NameValve,regulating,fluid Pressure
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerMetrex Valve Corp. Dba Metrex Valve Corp
StatusACTIVE
Body StyleSTRAIGHT THRU
MaterialCOPPER ALLOY 922 STEM
Material Document and ClassificationQQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE
Material Document and ClassificationASTM B61 ASSN STD SINGLE MATERIAL RESPONSE STEM
MaterialNICKEL ALLOY FLOW CONTROL DEVICE
Valve Stem DesignDOUBLE SEAT
End Connection Spec/stdMIL-F-20042C
Valve Size8.000 INCHES IN
Second End Relationship with First EndIDENTICAL
Second End Connection TypeRAISED FACE FLANGE
Flow Control DeviceDISK, PLUG TYPE
Valve Loading MethodWEIGHT
Media for Which DesignedWATER, SALT
End Connection Quantity2
Maximum Inlet Pressure RatingERR-060
Manual Control MethodSCREW AND WRENCH
MaterialRUBBER SEAT
First End Connection TypeRAISED FACE FLANGE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
5962-00-454-8123128C923H01 INTERCHANGEABLE
Microcircuit,digital
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp
3830-00-700-50457005045 INTERCHANGEABLE
Case Earth Borer
U S Army Tank Automotive Command Amsta-Im-Mm
4820-01-468-462050M-334 INTERCHANGEABLE
Valve,check
Metrex Valve Corp. Dba Metrex Valve Corp
4810-01-468-792627M-238 INTERCHANGEABLE
Stem,fluid Valve
Metrex Valve Corp. Dba Metrex Valve Corp
4810-01-468-796445M-713 INTERCHANGEABLE
Piston,valve
Metrex Valve Corp. Dba Metrex Valve Corp
3040-01-468-960145M-707 INTERCHANGEABLE
Cylinder,actuating,linear
Metrex Valve Corp. Dba Metrex Valve Corp
4320-01-469-082016-401M INTERCHANGEABLE
Pump Unit,hydraulic
Metrex Valve Corp. Dba Metrex Valve Corp
4320-01-469-106845M-722 INTERCHANGEABLE
Governor,pump,pressure Regulatin
Metrex Valve Corp. Dba Metrex Valve Corp
4810-01-469-307550M-325 INTERCHANGEABLE
Valve,linear,directional Control
Metrex Valve Corp. Dba Metrex Valve Corp
4810-01-545-1445EA1003 INTERCHANGEABLE
Actuator,electromechanical,rotar
Metrex Valve Corp. Dba Metrex Valve Corp
Cross-Reference Index
Part NumberManufacturer
EHOYM-3170 Metrex Valve Corp. Dba Metrex Valve Corp (USA)
EA1000 Metrex Valve Corp. Dba Metrex Valve Corp (USA)
EHOYM-3170-NF2-TB PRIMARY Metrex Valve Corp. Dba Metrex Valve Corp (USA)
EHOYM-3170-NF2 Metrex Valve Corp. Dba Metrex Valve Corp (USA)
EA1003 Metrex Valve Corp. Dba Metrex Valve Corp (USA)
Related Parts
5962-00-454-8123INTERCHANGEABLE
MICROCIRCUIT,DIGITAL
128C923H01
3830-00-700-5045INTERCHANGEABLE
CASE EARTH BORER
7005045
4820-01-468-4620INTERCHANGEABLE
VALVE,CHECK
50M-334
4810-01-468-7926INTERCHANGEABLE
STEM,FLUID VALVE
27M-238
4810-01-468-7964INTERCHANGEABLE
PISTON,VALVE
45M-713
3040-01-468-9601INTERCHANGEABLE
CYLINDER,ACTUATING,LINEAR
45M-707
4320-01-469-0820INTERCHANGEABLE
PUMP UNIT,HYDRAULIC
16-401M
4320-01-469-1068INTERCHANGEABLE
GOVERNOR,PUMP,PRESSURE REGULATIN
45M-722
4810-01-469-3075INTERCHANGEABLE
VALVE,LINEAR,DIRECTIONAL CONTROL
50M-325
4810-01-545-1445INTERCHANGEABLE
ACTUATOR,ELECTROMECHANICAL,ROTAR
EA1003

Frequently Asked Questions

What is NSN 4820-01-515-8319?

NSN 4820-01-515-8319 is a Valve,regulating,fluid Pressure, manufactured by Metrex Valve Corp. Dba Metrex Valve Corp, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-515-8319?

NSN 4820-01-515-8319 has 5 cross-referenced part numbers: EHOYM-3170 (Metrex Valve Corp. Dba Metrex Valve Corp), EA1000 (Metrex Valve Corp. Dba Metrex Valve Corp), EHOYM-3170-NF2-TB (Metrex Valve Corp. Dba Metrex Valve Corp), EHOYM-3170-NF2 (Metrex Valve Corp. Dba Metrex Valve Corp), EA1003 (Metrex Valve Corp. Dba Metrex Valve Corp).

What NSN replaces 4820-01-515-8319?

There are 10 known substitutes for 4820-01-515-8319: 5962-00-454-8123, 3830-00-700-5045, 4820-01-468-4620 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of EHOYM-3170-NF2-TB?

Key specifications for EHOYM-3170-NF2-TB: Body Style: STRAIGHT THRU; Material: COPPER ALLOY 922 STEM; Material Document and Classification: QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE; Material Document and Classification: ASTM B61 ASSN STD SINGLE MATERIAL RESPONSE STEM. 18 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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