# DIBBS #SPE7MC-26-T-283B

Procurement of Critical Application Valve Seats (NSN 4820-00-956-1413)

**Posted:** September 18, 2026
**Respond By:** September 28, 2026
**Identifier:** SPE7MC-26-T-283B
**NAICS:** 332911, 332912, 332919

The Defense Logistics Agency (DLA) Land and Maritime, Maritime Hardware/Electrical office is seeking valve seat components for critical application use.
- Government Buyer:
  - Defense Logistics Agency (DLA)
  - Sub-agency: DLA Land and Maritime
  - Office: Maritime Hardware/Electrical
- OEMs and Vendors:
  - Steward Machine Co Inc (CAGE 9E328)
- Products Requested:
  - SEAT, VALVE
    - National Stock Number (NSN): 4820-00-956-1413
    - Part Number: 587-551
    - Quantity: 13 units
    - Description: Valve seat, E/I VNXL FRD STM TDVN 19500 CFM, critical application item
- Unique or Notable Requirements:
  - Item is designated as a critical application part
  - Compliance with domestic material restrictions is required
  - Prohibition on covered defense telecommunications equipment
  - Delivery is FOB origin with destination inspection and acceptance at DLA Distribution, New Cumberland, PA

### Description

SEAT, VALVE (QTY: 13, NSN: 4820-00-956-1413, Purchase Request: 7018273666)
  Approved Sources:
  - CAGE: 9E328, Part No: 587-551, Company: STEWARD MACHINE CO INC
 

[View original listing](https://www.dibbs.bsm.dla.mil/rfq/rfqrec.aspx?sn=SPE7MC26T283B)