PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

8629Valve,regulating,fluid Pressure

Prosperity a Div of Ametek Inc · NSN 4820-00-609-3487 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-609-3487 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-609-3487. Primary manufacturer part number: 8629.
Features
  • Valve,regulating,fluid Pressure — FSC 4820
  • Renewable Seat Ring Type: PRESSED-INPRESSED-IN
  • Second End Outside Diameter Tube Accommodated: 0.250 INCHES NOMINAL0.250 INCHES NOMINAL IN
  • Second End Relationship with First End: NOT IDENTICALNOT IDENTICAL
  • Valve Stem Design: SINGLE SEATSINGLE SEAT
  • Thread Size and Series/type Designator: 7/16-20 UNF SECOND END7/16-20 UNF SECOND END
  • Thread Size and Series/type Designator: 3/4-16 UNF FIRST END3/4-16 UNF FIRST END
  • First End Thread Class: 3B3B
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Valve,regulating,fluid Pressure, cataloged under National Stock Number 4820-00-609-3487, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Prosperity a Div of Ametek Inc. Government technical data includes 29 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. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-00-609-3487
Primary Part Number8629
Item NameValve,regulating,fluid Pressure
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerProsperity a Div of Ametek Inc
StatusACTIVE
Renewable Seat Ring TypePRESSED-INPRESSED-IN
Second End Outside Diameter Tube Accommodated0.250 INCHES NOMINAL0.250 INCHES NOMINAL IN
Second End Relationship with First EndNOT IDENTICALNOT IDENTICAL
Valve Stem DesignSINGLE SEATSINGLE SEAT
Thread Size and Series/type Designator7/16-20 UNF SECOND END7/16-20 UNF SECOND END
Thread Size and Series/type Designator3/4-16 UNF FIRST END3/4-16 UNF FIRST END
First End Thread Class3B3B
Flow Control DevicePOPPETPOPPET
Second End Thread Pitch Diameters+0.4050 TO 0.4091 INCHES+0.4050 TO 0.4091 INCHES IN
First End Thread DirectionRIGHT-HANDRIGHT-HAND
Outlet Pressure SettingERR-060
First End Thread Pitch Diameters+0.7094 TO 0.7143 INCHES+0.7094 TO 0.7143 INCHES IN
Second End Seat Angle in Deg60.060.0
First End Seat Angle in Deg60.060.0
Remote Actuation MethodBELLOWSBELLOWS
End Connection Quantity22
Second End Style DesignatorGASKET SEALGASKET SEAL
Media for Which DesignedAIRAIR
Valve Loading MethodSPRINGSPRING
First End Style DesignatorGASKET SEALGASKET SEAL
Mounting FacilityFLANGEFLANGE
Regulation TypeAUTOMATIC SINGLE STAGEAUTOMATIC SINGLE STAGE
Second End Connection TypeTHREADED INTERNAL TUBETHREADED INTERNAL TUBE
First End Connection TypeTHREADED INTERNAL TUBETHREADED INTERNAL TUBE
Second End Thread DirectionRIGHT-HANDRIGHT-HAND
First End Outside Diameter Tube Accommodated0.500 INCHES NOMINAL0.500 INCHES NOMINAL IN
Maximum Inlet Pressure RatingERR-060
Second End Thread Class3B3B
Body StyleSTRAIGHT THRU W/OFFSETSTRAIGHT THRU W/OFFSET
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
3110-00-190-92604050 INTERCHANGEABLE
Bearing,ball,annular
Schatz Bearing Corporation Dba Schatz Bearing Corp
2915-00-484-70548629 INTERCHANGEABLE
Sleeve
Triumph Engine Control Systems Llc
5930-00-503-488410370EB INTERCHANGEABLE
Switch,pressure
Tld Wollard Llc
5950-00-977-2928302009 INTERCHANGEABLE
Transformer,power
Tdk-Lambda Americas Inc. Div High Power Division
6145-01-256-04639393 INTERCHANGEABLE
Cable,special Purpose,electrical
General Wire Products, Inc. Dba General Wire Products Inc
Cross-Reference Index
Part NumberManufacturer
8629 Prosperity a Div of Ametek Inc (USA)
Related Parts
3110-00-190-9260INTERCHANGEABLE
BEARING,BALL,ANNULAR
4050
2915-00-484-7054INTERCHANGEABLE
SLEEVE
8629
5930-00-503-4884INTERCHANGEABLE
SWITCH,PRESSURE
10370EB
5950-00-977-2928INTERCHANGEABLE
TRANSFORMER,POWER
302009
6145-01-256-0463INTERCHANGEABLE
CABLE,SPECIAL PURPOSE,ELECTRICAL
9393

Frequently Asked Questions

What is NSN 4820-00-609-3487?

NSN 4820-00-609-3487 is a Valve,regulating,fluid Pressure, manufactured by Prosperity a Div of Ametek Inc, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-609-3487?

NSN 4820-00-609-3487 has 1 cross-referenced part number: 8629 (Prosperity a Div of Ametek Inc).

What NSN replaces 4820-00-609-3487?

There are 5 known substitutes for 4820-00-609-3487: 3110-00-190-9260, 2915-00-484-7054, 5930-00-503-4884 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 8629?

Key specifications for 8629: Renewable Seat Ring Type: PRESSED-INPRESSED-IN; Second End Outside Diameter Tube Accommodated: 0.250 INCHES NOMINAL0.250 INCHES NOMINAL IN; Second End Relationship with First End: NOT IDENTICALNOT IDENTICAL; Valve Stem Design: SINGLE SEATSINGLE SEAT. 29 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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