PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

S-535Liner,valve

Pentair Valves & Controls Us Lp Div Flow Control Us Holding Corp · NSN 4820-01-161-9621 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-161-9621 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-161-9621. Primary manufacturer part number: S-535.
Features
  • Liner,valve — FSC 4820
  • General Characteristics Item Description: BRONZE PER MIL-B-16261 GR 6;MAX STEAM PRESS 850 PSIG;MAX STEAM TEMP 550 DEG FTT;MAX OIL PRESS 3000 PSIG;2 INLETS-8 IN. IN
  • 4 verified cross-references
  • Primary manufacturer: Pentair Valves & Controls Us Lp Div Flow Control Us Holding Corp
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Liner,valve, cataloged under National Stock Number 4820-01-161-9621, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Pentair Valves & Controls Us Lp Div Flow Control Us Holding Corp. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-161-9621
Primary Part NumberS-535
Item NameLiner,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerPentair Valves & Controls Us Lp Div Flow Control Us Holding Corp
StatusACTIVE
General Characteristics Item DescriptionBRONZE PER MIL-B-16261 GR 6;MAX STEAM PRESS 850 PSIG;MAX STEAM TEMP 550 DEG FTT;MAX OIL PRESS 3000 PSIG;2 INLETS-8 IN. IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5340-00-529-4294S535 INTERCHANGEABLE
Deflector,dirt and Liquid
The Dewey Electronics Corporation Div Pitometer Log Division
2030-01-239-4104 INTERCHANGEABLE
Level Wind Assembly
4240-01-302-7136S535 INTERCHANGEABLE
Lens,replacement
Honeywell Safety Products Usa, Inc.
Cross-Reference Index
Part NumberManufacturer
S-535 Pentair Valves & Controls Us Lp Div Flow Control Us Holding Corp (USA)
NM-174 Pentair Valves & Controls Us Lp Div Flow Control Us Holding Corp (USA)
S-535PIECE50 Pentair Valves & Controls Us Lp Div Flow Control Us Holding Corp (USA)
NM-174-1 Pentair Valves & Controls Us Lp Div Flow Control Us Holding Corp (USA)
Related Parts
5340-00-529-4294INTERCHANGEABLE
DEFLECTOR,DIRT AND LIQUID
S535
2030-01-239-4104INTERCHANGEABLE
LEVEL WIND ASSEMBLY
4240-01-302-7136INTERCHANGEABLE
LENS,REPLACEMENT
S535

Frequently Asked Questions

What is NSN 4820-01-161-9621?

NSN 4820-01-161-9621 is a Liner,valve, manufactured by Pentair Valves & Controls Us Lp Div Flow Control Us Holding Corp, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-161-9621?

NSN 4820-01-161-9621 has 4 cross-referenced part numbers: S-535 (Pentair Valves & Controls Us Lp Div Flow Control Us Holding Corp), NM-174 (Pentair Valves & Controls Us Lp Div Flow Control Us Holding Corp), S-535PIECE50 (Pentair Valves & Controls Us Lp Div Flow Control Us Holding Corp), NM-174-1 (Pentair Valves & Controls Us Lp Div Flow Control Us Holding Corp).

What NSN replaces 4820-01-161-9621?

There are 3 known substitutes for 4820-01-161-9621: 5340-00-529-4294, 2030-01-239-4104, 4240-01-302-7136. Verify interchangeability with system specifications before substitution.

What are the specifications of S-535?

Key specifications for S-535: General Characteristics Item Description: BRONZE PER MIL-B-16261 GR 6;MAX STEAM PRESS 850 PSIG;MAX STEAM TEMP 550 DEG FTT;MAX OIL PRESS 3000 PSIG;2 INLETS-8 IN. IN. 1 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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