Valve, Safety Relief4820-01-351-8027

NSN 4820-01-351-8027 · NIIN 013518027 · Part number XL872-15

Trola-Dyne, Inc. · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 8W625

Government record, cited

NSN 4820-01-351-8027 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-351-8027. Manufacturer of record part number: XL872-15.

Also searched as 4820-01-351-8027 · 4820013518027 · NIIN 013518027 · 01-351-8027 · FSC 4820 Valves, Nonpowered · CAGE 8W625 · XL872-15

Nearby stock numbers ← 4820-01-351-8026 Valve, Check · 4820-01-351-8031 Valve, Ball →

4820-01-351-8027 — Valves, Nonpowered

Features

Valve,safety Relief — FSC 4820
Flow Control Device: DISK
Connection Style: INVERTED FLARE(TUBE) ALL ENDS
Connection Type: THREADED INTERNAL TUBE ALL ENDS
Style Designator: STRAIGHT THRU
Thread Direction: RIGHT-HAND ALL ENDS
Nominal Thread Size: 0.562 INCHES ALL ENDS IN
Seat Angle: 37.0 DEGREES ALL ENDS

Identification

NSN: 4820-01-351-8027
NIIN: 013518027
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: XL872-15
Manufacturer: Trola-Dyne, Inc.

General Description

The Valve,safety Relief, cataloged under National Stock Number 4820-01-351-8027, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Trola-Dyne, Inc.. Government technical data includes 10 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

Parameter	Value
NSN	4820-01-351-8027
Primary Part Number	XL872-15
Item Name	Valve,safety Relief
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Trola-Dyne, Inc.
Status	ACTIVE
Flow Control Device	DISK
Connection Style	INVERTED FLARE(TUBE) ALL ENDS
Connection Type	THREADED INTERNAL TUBE ALL ENDS
Style Designator	STRAIGHT THRU
Thread Direction	RIGHT-HAND ALL ENDS
Nominal Thread Size	0.562 INCHES ALL ENDS IN
Seat Angle	37.0 DEGREES ALL ENDS
Material	ALUMINUM BODY
Thread Series Designator	UNF ALL ENDS
Valve Operation Method	AUTOMATIC

Lifecycle & Compliance

Acquisition Status	ACTIVE
DEMIL Code	DEMIL A — No Demilitarization Required
Hazard	No hazard code in the DLA record (HMIC N)
Criticality Code	X

Cross-Reference Index

Part Number	Manufacturer
XL872-15 PRIMARY	Trola-Dyne, Inc. (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 4820-01-351-8027?

NSN 4820-01-351-8027 is a Valve,safety Relief, manufactured by Trola-Dyne, Inc., classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-351-8027?

NSN 4820-01-351-8027 has 1 manufacturer part number on file: XL872-15 (Trola-Dyne, Inc.).

What are the specifications of XL872-15?

Key specifications for XL872-15: Flow Control Device: DISK; Connection Style: INVERTED FLARE(TUBE) ALL ENDS; Connection Type: THREADED INTERNAL TUBE ALL ENDS; Style Designator: STRAIGHT THRU. 10 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-351-8027 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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