Home · FSC 4820 Valves, Nonpowered · NSN 4820-00-980-8475

NSN 4820-00-980-8475 — Valve,Check

NIIN 00-980-8475 · unit of issue EA · AAC D (stocked, centrally managed (dla)) · source of supply SMS

Buying rhythm

from 15 government buys since 2017

The government has bought this item about every 6 months (regular, gaps vary ±56%). Last buy Nov 18, 2025. If the rhythm holds, the next one falls between Mar 4, 2026 and Sep 30, 2026: a buy is due about now.

How well this works: for regular items, "next buy about one typical gap after the last, give or take 121 days" caught the actual next buy 42% of the time across 15,953 past buys, against 22% for a fixed "one year later" guess. A rhythm, not a schedule: DLA buys when stock and demand say so. Every item due for a buy now.

NSN 4820-00-980-8475 is the national stock number for a valve,check in federal supply class 4820 (Valves, Nonpowered). It cross-references to 4 manufacturer part numbers from 6 CAGE codes, including Crissair Inc, Northrop Grumman Systems Corporation, Tactair Fluid Controls Inc; the primary is 2-43923-11. The unit of issue is EA and the FLIS list price is $1,565.02.

The U.S. government has bought this item 15 times on record, 2 of them in the last 24 months, most recently on November 18, 2025 at $1,148.00 each from Transaero, Inc.. The median unit price paid over 36 months is $1,138.09. No seller has confirmed stock of it here in the last 60 days; watching the number is free and the first listing triggers an alert.

4

part numbers from 6 CAGEs

0

open solicitations, all agencies

2

government buys in 24 months · median $1,138.09

0

sellers with confirmed stock

Watch NSN 4820-00-980-8475: an email the morning the government solicits or buys it, or an AD names it. Free.
Know someone who should see this?

Cross-references

Part numbers filed against this stock number, with the manufacturer (CAGE) and the FLIS reference codes.

Part numberCAGEManufacturerReferenceVariation
2C595699240Crissair Inc3 · Design control (vendor)2 · Fully interchangeable
2-43923-1106892Northrop Grumman Systems Corporation5 · Secondary reference2 · Fully interchangeable
2315-370236Tactair Fluid Controls Inc5 · Secondary reference2 · Fully interchangeable
2315-399215Kaiser Fluid Technologies Inc.5 · Secondary reference9 · Reference only
2315-399473Hawker Pacific Aerospace Landing Gear And Components Mfg And Repair5 · Secondary reference9 · Reference only
M4014-3-406239Ausco Inc5 · Secondary reference2 · Fully interchangeable

Government demand

Nothing open right now. Last government buy Nov 18, 2025. Watch this NSN and we will email you when it is solicited.

What the government paid

DateVendorQtyUnit costAmountBuyerReference
Nov 18, 2025Transaero, Inc. 27541101$1,148.00DlaSPE7MC26P0523
Dec 19, 2024Transaero, Inc. 2754120$1,114.99DlaSPE7M125V1683
Jun 21, 2024Transaero, Inc. 2754117$1,138.09DlaSPE7MC24V6959
Jan 4, 2024Mitchell Aircraft, LLC 7BRY18$1,140.00DlaSPE7M124V1790
Dec 11, 2023New England Specialty Components, LLC 1WAC119$1,047.50DlaSPE7M124V1426
Dec 20, 2022Transaero, Inc. 2754142$884.15DlaSPE7MC23V1840
Oct 4, 2022New England Specialty Components, LLC 1WAC118$924.00DlaSPE7MC23V0033
Jun 23, 2022New England Specialty Components, LLC 1WAC118$925.00DlaSPE7MC22V9064
Nov 9, 2021New England Specialty Components, LLC 1WAC115$829.00DlaSPE7MC22P0947
Apr 20, 2021Mitchell Aircraft, LLC 7BRY114$918.89DlaSPE7MC21V7137
Mar 3, 2021New England Specialty Components, LLC 1WAC118$826.75DlaSPE7MC21P2428
Feb 10, 2020New England Specialty Components, LLC 1WAC156$800.70DlaSPE7MC20P1888
Feb 11, 2019New England Specialty Components, LLC 1WAC151$781.50DlaSPE7MC19P2578
Apr 3, 2018New England Specialty Components, LLC 1WAC152$754.60DlaSPE7MC18P3438
Oct 24, 2017New England Specialty Components, LLC 1WAC150$754.90DlaSPE7MC18P0510

Sources: DLA DIBBS procurement history (unit cost), DLA award history, FPDS (all agencies), SAM.gov notices. 15 buys on record in total.

Sellers with confirmed stock

No seller has confirmed stock on this NSN in the last 60 days. Watch it and we will email you when one does, or request a quote on 2-43923-11.

Request 2-43923-11

No account needed. Goes to the sellers who carry this number or its family.

Listings appear here only while the seller has confirmed them within 60 days. Sellers: list this part free.

DLA management data

FLIS unit price
$1,565.02
Unit of issue
EA
Acquisition advice
D — Stocked, centrally managed (DLA)
Source of supply
SMS
Effective
Oct 1, 2025

Item characteristics

Thread Class
3A
Thread Direction
FIRST END RIGHT-HAND
Thread Direction
SECOND END RIGHT-HAND
Flow Control Device
POPPET
Connection Type
FIRST END THREADED EXTERNAL TUBE
Connection Type
SECOND END THREADED EXTERNAL TUBE
Mounting Position
HORIZONTAL
Thread Quantity Per Inch
24
Thread Quantity Per Inch
20
Nominal Thread Size
FIRST END INCHES 0.437
Nominal Thread Size
SECOND END INCHES 0.375
Operating Pressure
SINGLE RESPONSE POUNDS PER SQUARE INCH (PSI) MAXIMUM 3000.0
Seat Angle
FIRST END DEGREES 12.0
Seat Angle
SECOND END DEGREES 12.0
Nominal Outside Diameter Tube Accommodated
FIRST END INCHES 0.250
Nominal Outside Diameter Tube Accommodated
SECOND END INCHES 0.188
Media For Which Designed
SINGLE RESPONSE HYDRAULIC FLUID, PHOSPHATE-ESTER BASE
Test Data Document
DRAWING (THIS IS THE BASIC GOVERNING DRAWING, SUCH AS A CONTRACTOR DRAWING, ORIGINAL EQUIPMENT MANUFACTURER DRAWING, ETC.; EXCLUDES ANY SPECIFICATION, STANDARD OR OTHER DOCUMENT THAT MAY BE REFERENCED
Thread Series Designator
FIRST END UNF
Thread Series Designator
SECOND END UNF

About this page

An NSN is 13 digits: the 4-digit Federal Supply Class and the 9-digit NIIN. Cross-references come from the federal logistics record; demand from DLA DIBBS, SAM.gov and FPDS; ADs from the Federal Register. Refreshed nightly. Market Pulse shows the whole market.

Get the daily Market Pulse

New DLA RFQs, SAM.gov notices, yesterday's awards and FAA directives, weekday mornings. Free, one click to leave.