# DIBBS #SPE7MC-27-T-1673

DLA seeks two Ammcon bronze valve pistons for a Backflow Preventer Model E-1

**Posted:** November 06, 2026
**Respond By:** November 16, 2026
**Identifier:** SPE7MC-27-T-1673
**NAICS:** 332919

DLA Weapons Support is seeking two bronze valve pistons for a specific vacuum-breaker application.
- **Government buyer:** Defense Logistics Agency (DLA), DLA Weapons Support, Maritime Hardware/Electrical.
- **OEM/source:** **Ammcon Corp.** (CAGE 6W889), cited as the critical-application source; OEM part number BMC3479A Part 12.
- **Requested product:** Two bronze valve pistons, NSN 4820-01-090-4962, for a 3/4-inch vacuum breaker in a Backflow Preventer Model E-1.
- **Delivery and acceptance:** Delivery is required 168 days after order. FOB Origin; destination inspection and acceptance apply.
- **Other requirements:** The cited source and part number are identified for this critical-application item.

### Description

PISTON, VALVE (QTY: 2, NSN: 4820-01-090-4962, Purchase Request: 7019028788)
  Approved Sources:
  - CAGE: 6W889, Part No: BMC3479A PART 12
 

[View original listing](https://www.dibbs.bsm.dla.mil/rfq/rfqrec.aspx?sn=SPE7MC27T1673)