Home · FSC 4820 Valves, Nonpowered · NSN 4820-01-481-1656

NSN 4820-01-481-1656 — Disc Assembly

NIIN 01-481-1656 · unit of issue EA · AAC Z (insurance item) · source of supply SMS

Buying rhythm

from 5 government buys since 2017

The government has bought this item about every 2.2 years (regular, gaps vary ±58%). Last buy Jul 3, 2025. If the rhythm holds, the next one falls between Jun 15, 2026 and May 9, 2028: a buy is due about now. 1 solicitation is open right 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 15,552 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 4820-01-481-1656 is the national stock number for a disc assembly in federal supply class 4820 (Valves, Nonpowered). It cross-references to 3 manufacturer part numbers from 2 CAGE codes, including Dante Valve Company, Danco Valve Company; the primary is B42005A. The unit of issue is EA and the FLIS list price is $344.91.

The U.S. government has bought this item 11 times on record, 1 of them in the last 24 months, most recently on July 3, 2025 at $405.00 each from Dante Valve Company. The median unit price paid over 36 months is $405.00. 1 solicitation is open right now, the soonest due October 5, 2026 for 45 EA. 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.

3

part numbers from 2 CAGEs

1

open solicitation, all agencies

1

government buy in 24 months · median $405.00

0

sellers with confirmed stock

Watch NSN 4820-01-481-1656: an email the morning the government solicits or buys it, or an AD names it. Free.
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Cross-references

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

Part numberCAGEManufacturerReferenceVariation
B42005A5P967Dante Valve Company3 · Design control (vendor)2 · Fully interchangeable
B42005A65079Danco Valve Company3 · Design control (vendor)9 · Reference only
D4200 ITEM 7,8,9 P/N B42005A5P967Dante Valve Company5 · Secondary reference2 · Fully interchangeable
D4200 ITEM 7,8,9 P/N B42005A65079Danco Valve Company5 · Secondary reference9 · Reference only
D420065079Danco Valve CompanyD9 · Reference only

Government demand

Open DLA RFQs (DIBBS)

What the government paid

DateVendorQtyUnit costAmountBuyerReference
Jul 3, 2025Dante Valve Company 5P96744$405.00DlaSPE7M025V7780
Dec 20, 2022Dante Valve Company 5P96745$245.00DlaSPE7M323V0649
Nov 15, 2022Dante Valve Company 5P9673$281.00DlaSPE7M323V0336
Nov 14, 2019Dante Valve Company 5P96737$197.00DlaSPE7M820V0529
Nov 28, 2017Dante Valve Company 5P96725$186.00DlaSPE7M318P1189
Aug 22, 2013Triman Industries Inc 0ZBE869$186.50DlaSPE7M013V7378
Oct 17, 2012Triman Industries Inc 0ZBE818$190.13DlaSPM7M013V0195
Sep 7, 2011Triman Industries Inc 0ZBE814$190.13DlaSPM7M511V5854
Jul 5, 2011Triman Industries Inc 0ZBE815$190.13DlaSPM7M511V4704
Jan 14, 2011Triman Industries Inc 0ZBE88$196.00DlaSPM7M011V1781
Oct 14, 2009Dante Valve Company 5P9671$162.00DlaSPM7M210M0465

Sources: DLA DIBBS procurement history (unit cost), DLA award history, FPDS (all agencies), SAM.gov notices. 11 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 B42005A.

Request B42005A

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
$344.91
Unit of issue
EA
Acquisition advice
Z — Insurance item
Source of supply
SMS
Effective
Oct 1, 2025

Item characteristics

End Item Identification
E/I VALVE, ANGLE RELIEF D42 400 PSI, 1/2" X 3/4" IPS
Pressure Rating
POUNDS PER SQUARE INCH (PSI) 400.0
Special Features
ASSEMBLY INCLUDES DISC 42005-1; DISC GUIDE 42005-2; DISC INSERT 42005-3. SOLD AS AN ASSEMBLY ONLY
Material
PLASTIC OR COPPER ALLOY
Proprietary Characteristics
PACS

Related stock numbers

Other NSNs filed under the same part numbers.

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.

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