PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

S-21-INTERNAL#0319079Seat,valve

Sloan Valve Company · NSN 4810-00-325-3197 · FSC 4810 · No Item Name Available
Verified by PartsTable
NSN 4810-00-325-3197 — this item is cataloged by the U.S. Government under National Stock Number 4810-00-325-3197. Primary manufacturer part number: S-21-INTERNAL#0319079.
Features
  • Seat,valve — FSC 4810
  • Body Inside Diameter: 1.250 INCHES NOMINAL IN
  • Seating Surface Shape: FLAT
  • Style Designator: PLAIN
  • Body Outside Diameter: 1.750 INCHES NOMINAL IN
  • Material: RUBBER SYNTHETIC OVERALL
  • 2 verified cross-references
  • Primary manufacturer: Sloan Valve Company
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Rubber Synthetic Overall construction
General Description

The Seat,valve, cataloged under National Stock Number 4810-00-325-3197, is classified within Federal Supply Class 4810 (No Item Name Available) of the Valves group. The primary manufacturer of record is Sloan Valve Company. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 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: Active.

Technical Specifications
ParameterValue
NSN4810-00-325-3197
Primary Part NumberS-21-INTERNAL#0319079
Item NameSeat,valve
FSC / FSG4810 / 48 — No Item Name Available
ManufacturerSloan Valve Company
StatusACTIVE
Body Inside Diameter1.250 INCHES NOMINAL IN
Seating Surface ShapeFLAT
Style DesignatorPLAIN
Body Outside Diameter1.750 INCHES NOMINAL IN
MaterialRUBBER SYNTHETIC OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
6680-00-053-3961S21 INTERCHANGEABLE
Plug,sight
Eaton Aerospace Llc Div Fluid and Electrical Distribution Division
5120-00-156-8609S21 INTERCHANGEABLE
Die,crimping Tool
Souriau Usa, Inc. Dba Souriau Usa Inc
3460-00-189-9132 INTERCHANGEABLE
Holder,cutting Tool
5130-00-293-1411IM302A INTERCHANGEABLE
Socket,socket Wrench
Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc
1650-00-310-212120020-248-100 INTERCHANGEABLE
Filtering Disk,fluid
Pall Aeropower Corp Sub of Pall Corp Mectron Industries Div
3433-00-355-6243638948 INTERCHANGEABLE
Tip,welding Torch
Esab Group, Inc., the Dba Esab Welding and Cutting Products Div Esab Welding and Cuttng
3110-00-690-8923LM501349-LM501310 INTERCHANGEABLE
Bearing,roller,tapered
The Timken Corporation
9905-00-721-8291S2-1B INTERCHANGEABLE
Sign,traffic
Federal Prison Industries, Inc - Ebg
4730-01-128-524120020-325-100 INTERCHANGEABLE
Strainer Element,sediment
Pall Aeropower Corp Sub of Pall Corp Mectron Industries Div
4730-01-130-5476S21-355-100 INTERCHANGEABLE
Strainer Element,sediment
Eaton Aerospace Llc Dba Eaton Aerospace Jackson
Cross-Reference Index
Part NumberManufacturer
S-21-INTERNAL#0319079 PRIMARY Sloan Valve Company (USA)
S-21 Sloan Valve Company (USA)
Related Parts
6680-00-053-3961INTERCHANGEABLE
PLUG,SIGHT
S21
5120-00-156-8609INTERCHANGEABLE
DIE,CRIMPING TOOL
S21
3460-00-189-9132INTERCHANGEABLE
HOLDER,CUTTING TOOL
5130-00-293-1411INTERCHANGEABLE
SOCKET,SOCKET WRENCH
IM302A
1650-00-310-2121INTERCHANGEABLE
FILTERING DISK,FLUID
20020-248-100
3433-00-355-6243INTERCHANGEABLE
TIP,WELDING TORCH
638948
3110-00-690-8923INTERCHANGEABLE
BEARING,ROLLER,TAPERED
LM501349-LM501310
9905-00-721-8291INTERCHANGEABLE
SIGN,TRAFFIC
S2-1B
4730-01-128-5241INTERCHANGEABLE
STRAINER ELEMENT,SEDIMENT
20020-325-100
4730-01-130-5476INTERCHANGEABLE
STRAINER ELEMENT,SEDIMENT
S21-355-100
4730-01-158-8417INTERCHANGEABLE
ADAPTER,STRAIGHT,PIPE TO HOSE
082-0233-02-0
5895-01-469-9045INTERCHANGEABLE
MONITOR,AUDIO FREQUENCY
S21

Frequently Asked Questions

What is NSN 4810-00-325-3197?

NSN 4810-00-325-3197 is a Seat,valve, manufactured by Sloan Valve Company, classified under FSC 4810 (No Item Name Available). Status: active.

What are the part numbers for NSN 4810-00-325-3197?

NSN 4810-00-325-3197 has 2 cross-referenced part numbers: S-21-INTERNAL#0319079 (Sloan Valve Company), S-21 (Sloan Valve Company).

What NSN replaces 4810-00-325-3197?

There are 12 known substitutes for 4810-00-325-3197: 6680-00-053-3961, 5120-00-156-8609, 3460-00-189-9132 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of S-21-INTERNAL#0319079?

Key specifications for S-21-INTERNAL#0319079: Body Inside Diameter: 1.250 INCHES NOMINAL IN; Overall Height: 0.125 INCHES NOMINAL IN; Seating Surface Shape: FLAT; Style Designator: PLAIN. 6 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com