PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

40651-501Valve,diaphragm,stop

Trac Regulator Co., Inc. Dba Trac Regulator Co Inc · NSN 4820-01-382-1686 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-382-1686 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-382-1686. Primary manufacturer part number: 40651-501.
Features
  • Valve,diaphragm,stop — FSC 4820
  • Flange Face Design: RAISED STRAIGHT ALL ENDS
  • Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR FLOW CONTROL DEVICE
  • Face to Face Distance: 1.937 INCHES IN
  • Bonnet Type: INSIDE SCREW
  • Bonnet Attachment Method: THREADED
  • Connection Type: FLANGE ALL ENDS
  • Style Designator: CROSS FLANGED ENDS
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Rubber Butadiene-Acrylonitrile Class Nbr Flow Control Device construction
General Description

The Valve,diaphragm,stop, cataloged under National Stock Number 4820-01-382-1686, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Trac Regulator Co., Inc. Dba Trac Regulator Co Inc. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-382-1686
Primary Part Number40651-501
Item NameValve,diaphragm,stop
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerTrac Regulator Co., Inc. Dba Trac Regulator Co Inc
StatusACTIVE
Flange Face DesignRAISED STRAIGHT ALL ENDS
MaterialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR FLOW CONTROL DEVICE
Face to Face Distance1.937 INCHES IN
Bonnet TypeINSIDE SCREW
Bonnet Attachment MethodTHREADED
Connection TypeFLANGE ALL ENDS
Style DesignatorCROSS FLANGED ENDS
MaterialSTEEL BODY
MaterialSTEEL CORROSION RESISTING SEAT
MaterialSTEEL CORROSION RESISTING STEM
Third Connection Face to Centerline Distance4.250 INCHES IN
Valve Size1.000 INCHES IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
4820-01-382-17201467-00 INTERCHANGEABLE
Disk,valve
Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
Cross-Reference Index
Part NumberManufacturer
IL#9118-0367-005 Gea Westfalia Separator, Inc. Div Gea Westfalia Separator, Inc. (USA)
40651-501 PRIMARY Trac Regulator Co., Inc. Dba Trac Regulator Co Inc (USA)
40651-5 Trac Regulator Co., Inc. Dba Trac Regulator Co Inc (USA)
Related Parts
4820-01-382-1720INTERCHANGEABLE
DISK,VALVE
1467-00

Frequently Asked Questions

What is NSN 4820-01-382-1686?

NSN 4820-01-382-1686 is a Valve,diaphragm,stop, manufactured by Trac Regulator Co., Inc. Dba Trac Regulator Co Inc, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-382-1686?

NSN 4820-01-382-1686 has 3 cross-referenced part numbers: IL#9118-0367-005 (Gea Westfalia Separator, Inc. Div Gea Westfalia Separator, Inc.), 40651-501 (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc), 40651-5 (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc).

What NSN replaces 4820-01-382-1686?

There is 1 known substitute for 4820-01-382-1686: 4820-01-382-1720. Verify interchangeability with system specifications before substitution.

What are the specifications of 40651-501?

Key specifications for 40651-501: Flange Face Design: RAISED STRAIGHT ALL ENDS; Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR FLOW CONTROL DEVICE; Face to Face Distance: 1.937 INCHES IN; Bonnet Type: INSIDE SCREW. 12 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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