PartsTable TECHNICAL DATA SHEET
NSN 4820-01-693-8018Government record, cited

Valve, Relief, Pressure and Temper4820-01-693-8018

NSN 4820-01-693-8018 · NIIN 016938018 · Part number LF40XL-4
Watts Regulator Company · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 79227
Government record, cited
NSN 4820-01-693-8018 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-693-8018. Manufacturer of record part number: LF40XL-4.
Also searched as  4820-01-693-8018 · 4820016938018 · NIIN 016938018 · 01-693-8018 · FSC 4820 Valves, Nonpowered · CAGE 79227 · LF40XL-4
Nearby stock numbers  ·
Features
  • Valve,relief,pressure and Temper — FSC 4820
  • Opening Pressure Setting: ERR-060
  • Adjustable Pressure Range: 75.0 TO 150.0 CAMERA MOUNT
  • 1 manufacturer part number on file
  • Manufacturer of record: Watts Regulator Company
Identification
  • NSN: 4820-01-693-8018
  • NIIN: 016938018
  • FSC: 4820 — Valves, Nonpowered
  • FSG: 48 — Valves
  • Primary part number: LF40XL-4
  • Manufacturer: Watts Regulator Company
General Description

The Valve,relief,pressure and Temper, cataloged under National Stock Number 4820-01-693-8018, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Watts Regulator Company. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-693-8018
Primary Part NumberLF40XL-4
Item NameValve,relief,pressure and Temper
FSC / FSG4820 / 48 — Valves, Nonpowered
ManufacturerWatts Regulator Company
StatusACTIVE
Opening Pressure SettingERR-060
Adjustable Pressure Range75.0 TO 150.0 CAMERA MOUNT
Lifecycle & Compliance
Acquisition StatusACTIVE
DEMIL CodeDEMIL A — No Demilitarization Required
HazardNo hazard code in the DLA record (HMIC N)
Criticality CodeX
Cross-Reference Index
Part NumberManufacturer
LF40XL-4 PRIMARY Watts Regulator Company (USA)
No interchangeability data on file.
Other items in FSC 4820 — Valves, Nonpowered
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4820-00-000-0097
4820-00-000-0097 · Item name not on file
4820-00-001-0010
VALVE,ROTARY,SELECTOR
4820-00-001-0020
4820-00-001-0020 · Item name not on file
4820-00-001-0021
4820-00-001-0021 · Item name not on file
4820-00-001-0032
4820-00-001-0032 · Item name not on file
4820-00-001-0037
VALVE,SAFETY RELIEF
4820-00-001-0042
4820-00-001-0042 · Item name not on file
4820-00-001-1230
4820-00-001-1230 · Item name not on file

Frequently Asked Questions

What is NSN 4820-01-693-8018?

NSN 4820-01-693-8018 is a Valve,relief,pressure and Temper, manufactured by Watts Regulator Company, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-693-8018?

NSN 4820-01-693-8018 has 1 manufacturer part number on file: LF40XL-4 (Watts Regulator Company).

What are the specifications of LF40XL-4?

Key specifications for LF40XL-4: Opening Pressure Setting: ERR-060; Special Features: INLET X OUTLET:1M X 1F;LENGTH (BELOW INLET THREAD):4 IN;HEIGHT:6.25 IN;WIDTH:2.75 IN;WITH TEST LEVER AND EXTENSION THERMOSTAT;LEAD FREE CAST BODY;TAMPER-RESISTANT BONNET SCREWS IN; Part Name Assigned by Controlling Agency: RELIEF VALVE; Adjustable Pressure Range: 75.0 TO 150.0 CAMERA MOUNT. 2 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-693-8018 hazardous material?

No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.

Sources

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.

✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.
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