PartsTable TECHNICAL DATA SHEET

JULY 2026Technical Data Sheet

18646Stem,fluid Valve

Name: 18646
SKU: 4820-01-110-6621

Spx Flow Us, Llc Dba Spx Valves & Controls · NSN 4820-01-110-6621 · FSC 4820 · No Item Name Available

Verified by PartsTable

NSN 4820-01-110-6621 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-110-6621. Primary manufacturer part number: 18646.

4820-01-110-6621 — No Item Name Available illustration

Features

Stem,fluid Valve — FSC 4820
5 verified cross-references
Primary manufacturer: Spx Flow Us, Llc Dba Spx Valves & Controls

Applications

Flow control in piping systems
Pressure regulation
Steam and fluid isolation

General Description

The Stem,fluid Valve, cataloged under National Stock Number 4820-01-110-6621, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Spx Flow Us, Llc Dba Spx Valves & Controls. This item has 5 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications

Parameter	Value
NSN	4820-01-110-6621
Primary Part Number	18646
Item Name	Stem,fluid Valve
FSC / FSG	4820 / 48 — No Item Name Available
Manufacturer	Spx Flow Us, Llc Dba Spx Valves & Controls
Status	CANCELLED

Lifecycle & Compliance

Acquisition Status	CANCELLED
HAZMAT	No

⇄ Verified Substitutes 12

9160-00-050-373118646 INTERCHANGEABLE

Isodraulic Fluid,th

Hydro-Aire Aerospace Corp

5320-00-437-4736 INTERCHANGEABLE

Rivet,ejector Front

5360-00-457-3075 INTERCHANGEABLE

Spring,ejector

4820-00-886-3539 INTERCHANGEABLE

Disk,valve

4820-01-032-1399 INTERCHANGEABLE

Seat,valve

4410-01-107-0533X74222 HEAD ASSEMBLY INTERCHANGEABLE

Head Assembly

Clyde Bergemann Inc

3040-01-107-0534 INTERCHANGEABLE

Shaft,operating

3040-01-107-0535 INTERCHANGEABLE

Lever,manual Control

4410-01-107-0536 INTERCHANGEABLE

Cam,valve Assembly

4410-01-107-0560 INTERCHANGEABLE

Spindle,soot Blower

Cross-Reference Index

Part Number	Manufacturer
18646	Spx Flow Us, Llc Dba Spx Valves & Controls (USA)
18648	Spx Flow Us, Llc Dba Spx Valves & Controls (USA)
X74222	Spx Flow Us, Llc Dba Spx Valves & Controls (USA)
X74222 PIECE 83	Spx Flow Us, Llc Dba Spx Valves & Controls (USA)
74222 PIECE 83	Spx Flow Us, Llc Dba Spx Valves & Controls (USA)

Related Parts

9160-00-050-3731INTERCHANGEABLE

ISODRAULIC FLUID,TH

18646

5320-00-437-4736INTERCHANGEABLE

RIVET,EJECTOR FRONT

5360-00-457-3075INTERCHANGEABLE

SPRING,EJECTOR

4820-00-886-3539INTERCHANGEABLE

DISK,VALVE

4820-01-032-1399INTERCHANGEABLE

SEAT,VALVE

4410-01-107-0533INTERCHANGEABLE

HEAD ASSEMBLY

X74222 HEAD ASSEMBLY

3040-01-107-0534INTERCHANGEABLE

SHAFT,OPERATING

3040-01-107-0535INTERCHANGEABLE

LEVER,MANUAL CONTROL

4410-01-107-0536INTERCHANGEABLE

CAM,VALVE ASSEMBLY

4410-01-107-0560INTERCHANGEABLE

SPINDLE,SOOT BLOWER

4410-01-107-0564INTERCHANGEABLE

ROTOR BLOWER

5342-01-107-0568INTERCHANGEABLE

BRACKET,VALVE

S018911

Frequently Asked Questions

What is NSN 4820-01-110-6621?

NSN 4820-01-110-6621 is a Stem,fluid Valve, manufactured by Spx Flow Us, Llc Dba Spx Valves & Controls, classified under FSC 4820 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4820-01-110-6621?

NSN 4820-01-110-6621 has 5 cross-referenced part numbers: 18646 (Spx Flow Us, Llc Dba Spx Valves & Controls), 18648 (Spx Flow Us, Llc Dba Spx Valves & Controls), X74222 (Spx Flow Us, Llc Dba Spx Valves & Controls), X74222 PIECE 83 (Spx Flow Us, Llc Dba Spx Valves & Controls), 74222 PIECE 83 (Spx Flow Us, Llc Dba Spx Valves & Controls).

What NSN replaces 4820-01-110-6621?

There are 12 known substitutes for 4820-01-110-6621: 9160-00-050-3731, 5320-00-437-4736, 5360-00-457-3075 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 18646?

Key specifications for 18646: Special Features: SPRING LOADED. 1 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4820-01-110-6621 still in active supply?

NSN 4820-01-110-6621 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.

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