PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

N70303Diaphragm,valve,flat

Leslie Controls, Inc. Dba Leslie Controls Inc · NSN 4820-01-370-2983 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-370-2983 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-370-2983. Primary manufacturer part number: N70303.
Features
  • Diaphragm,valve,flat — FSC 4820
  • Material: RUBBER SYNTHETIC
  • 2 verified cross-references
  • Primary manufacturer: Leslie Controls, Inc. Dba Leslie Controls Inc
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Rubber Synthetic construction
General Description

The Diaphragm,valve,flat, cataloged under National Stock Number 4820-01-370-2983, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Leslie Controls, Inc. Dba Leslie Controls Inc. Government technical data includes 1 verified specification, 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. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-370-2983
Primary Part NumberN70303
Item NameDiaphragm,valve,flat
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerLeslie Controls, Inc. Dba Leslie Controls Inc
StatusACTIVE
MaterialRUBBER SYNTHETIC
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
3030-00-109-254570303 INTERCHANGEABLE
Belt,v
Tiffin Parts, L.l.c. Div Subsidiary of Pettibone Corp.
5975-00-239-0334 INTERCHANGEABLE
Conduit Outlet
5935-00-458-68266-1313-9 INTERCHANGEABLE
Socket,plug-in Electronic Compon
Electro Switch Corp. Dba Oak Grisgsby Div Electroswitch
6635-00-490-207770303 INTERCHANGEABLE
Tester,material Hardness
Shore Instrument and Mfg Co Inc Sub of High Voltage Engineering Corp
4820-00-646-95247030-3 INTERCHANGEABLE
Seat,valve
Woodward Hrt, Inc. Dba Woodward Hrt Inc
5930-00-868-84747937555 INTERCHANGEABLE
Switch,pressure
Air Force Lifecycle Management Center Electronic Components (aflcmc/ezss)
6640-00-933-8739270303 INTERCHANGEABLE
Catalyst,anaerobic Culture Appar
Becton, Dickinson and Co Dba Becton Dickinson & Co
6110-01-080-7803T800R-01000 INTERCHANGEABLE
Regulator,voltage
Mge UPS Systems, Inc.
3040-01-208-42657530-0003 INTERCHANGEABLE
Connecting Link,rigid
Tyee Aircraft Inc Div Tyee Aircraft
6105-01-220-7776N-70303 INTERCHANGEABLE
Motor,alternating Current
Continental Electric Motors, Inc.
Cross-Reference Index
Part NumberManufacturer
N70303 PRIMARY Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
70303 Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
Related Parts
3030-00-109-2545INTERCHANGEABLE
BELT,V
70303
5975-00-239-0334INTERCHANGEABLE
CONDUIT OUTLET
5935-00-458-6826INTERCHANGEABLE
SOCKET,PLUG-IN ELECTRONIC COMPON
6-1313-9
6635-00-490-2077INTERCHANGEABLE
TESTER,MATERIAL HARDNESS
70303
4820-00-646-9524INTERCHANGEABLE
SEAT,VALVE
7030-3
5930-00-868-8474INTERCHANGEABLE
SWITCH,PRESSURE
7937555
6640-00-933-8739INTERCHANGEABLE
CATALYST,ANAEROBIC CULTURE APPAR
270303
6110-01-080-7803INTERCHANGEABLE
REGULATOR,VOLTAGE
T800R-01000
3040-01-208-4265INTERCHANGEABLE
CONNECTING LINK,RIGID
7530-0003
6105-01-220-7776INTERCHANGEABLE
MOTOR,ALTERNATING CURRENT
N-70303
5110-01-434-9867INTERCHANGEABLE
CHISEL,COLD,HAND

Frequently Asked Questions

What is NSN 4820-01-370-2983?

NSN 4820-01-370-2983 is a Diaphragm,valve,flat, manufactured by Leslie Controls, Inc. Dba Leslie Controls Inc, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-370-2983?

NSN 4820-01-370-2983 has 2 cross-referenced part numbers: N70303 (Leslie Controls, Inc. Dba Leslie Controls Inc), 70303 (Leslie Controls, Inc. Dba Leslie Controls Inc).

What NSN replaces 4820-01-370-2983?

There are 11 known substitutes for 4820-01-370-2983: 3030-00-109-2545, 5975-00-239-0334, 5935-00-458-6826 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of N70303?

Key specifications for N70303: Special Features: MATERIAL SPEC BUNA N, NYLON REINFORCED (600 PSI MULLENS BURST); End Item Identification: LUBE OIL PRESSURE REGULATOR PART NUMBER 33727N; Material: RUBBER SYNTHETIC. 3 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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