Home · FSC 4820 Valves, Nonpowered · NSN 4820-00-959-9854

NSN 4820-00-959-9854 — Disk,Valve

NIIN 00-959-9854 · unit of issue EA · AAC Z (insurance item) · source of supply SMS

Buying rhythm

from 4 government buys since 2021

The government has bought this item about every 5 months (irregular, gaps vary ±109%). Last buy Nov 18, 2025. The gaps are too uneven to put a window on the next one.

How well this works: for irregular items, "next buy about one typical gap after the last, give or take 152 days" caught the actual next buy 31% of the time across 21,749 past buys, against 24% 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 4820-00-959-9854 is the national stock number for a disk,valve in federal supply class 4820 (Valves, Nonpowered). It cross-references to 3 manufacturer part numbers from 1 CAGE code, including Marotta Controls Inc; the primary is 155952-0001. The unit of issue is EA and the FLIS list price is $3,138.75.

The U.S. government has bought this item 9 times on record, 4 of them in the last 24 months, most recently on November 24, 2025 at $3,270.00 each from Marotta Controls Inc. The median unit price paid over 36 months is $3,201.50. 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.

part numbers from 1 CAGE

open solicitations, all agencies

government buys in 24 months · median $3,201.50

sellers with confirmed stock

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Cross-references

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

Part number	CAGE	Manufacturer	Reference	Variation
155952-0001	99657	Marotta Controls Inc	3 · Design control (vendor)	2 · Fully interchangeable
155952-1	99657	Marotta Controls Inc	3 · Design control (vendor)	2 · Fully interchangeable
155952-001	99657	Marotta Controls Inc	C	1 · Not fully interchangeable

Government demand

Nothing open right now. Last government buy Nov 24, 2025. Watch this NSN and we will email you when it is solicited.

What the government paid

Date	Vendor	Qty	Unit cost	Buyer	Reference
Nov 24, 2025	Marotta Controls Inc 99657	5	$3,270.00	Dla	SPE7MC26V0706
Nov 18, 2025	Marotta Controls Inc 99657	2	$3,998.00	Dla	SPE7MC26P0605
Jul 18, 2025	Marotta Controls Inc 99657	6	$3,133.00	Dla	SPE7MC25P2248
Jul 2, 2025	Fdh Defense Aftermarket, LLC 7CNG1	2	$2,000.00	Dla	SPE7MC25P2261
Feb 28, 2022	Marotta Controls Inc 99657	5	$2,460.00	Dla	SPE7MC22P1896
Dec 8, 2021	Equipment Parts Sales 1N0P1	1	$1,200.00	Dla	SPE7M422P0684
Oct 26, 2011	Marotta Controls Inc 99657	10	$1,200.00	Dla	SPM7M512M0010
Oct 15, 2010	Marotta Controls Inc 99657	10	$985.00	Dla	SPM7M211M0280
Jun 4, 1999	Marotta Controls Inc 99657	14	$337.90	Dla	SP076099MC436

Sources: DLA DIBBS procurement history (unit cost), DLA award history, FPDS (all agencies), SAM.gov notices. 9 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 155952-0001.

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

DLA management data

FLIS unit price: $3,138.75
Unit of issue: EA
Acquisition advice: Z — Insurance item
Source of supply: SMS
Effective: Oct 1, 2025

Item characteristics

Inside Diameter: INCHES NOMINAL 0.472
Shank Diameter: INCHES NOMINAL 0.683
Outside Diameter: INCHES MINIMUM 0.868 AND INCHES MAXIMUM 0.870
Overall Height: INCHES NOMINAL 1.370
Flange Seat To Disk End Height: INCHES NOMINAL 1.035
Seat Angle: DEGREES NOMINAL 52.0
Material: STEEL CORROSION RESISTING

Related stock numbers

Other NSNs filed under the same part numbers.

01-517-4866 · Disk,Valve
01-633-4821 · Disk,Valve

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.