# DIBBS #SPE7MC-27-T-1626

DLA request for 17 Crissair aircraft check valves

**Posted:** November 06, 2026
**Respond By:** November 16, 2026
**Identifier:** SPE7MC-27-T-1626
**NAICS:** 332919, 336413, 332911

The Defense Logistics Agency is seeking 17 aircraft check valves for TF-15A use.
- **Buyer:** Defense Logistics Agency (DLA), DLA Weapons Support, Maritime Hardware/Electrical.
- **OEM / approved source:** **Crissair Inc.**, part number 4C2640-3.
- **Product:** 17 check valves, NSN 4820-00-341-3911 (also shown as 4820003413911).
  - Corrosion-resistant steel body; 1/4-inch inlet and 3/8-inch outlet tube sizes.
  - Rated flow: 1.2 GPM; working pressure: 3,000 PSI; temperature rating: -65°F to +450°F; cracking pressure: 2–8 PSI.
  - Thread specifications: .4375-24UNJS-3A and .5625-20UNJS-3A.
- **Notable requirements:** Restricted-source/critical-application procurement; source approval and CMMC Level 2 self-assessment requirements apply.

### Description

VALVE, CHECK (QTY: 17, NSN: 4820-00-341-3911, Purchase Request: 7019030842)
  Approved Sources:
  - CAGE: 99240, Part No: 4C2640-3, Company: CRISSAIR INC
 

[View original listing](https://www.dibbs.bsm.dla.mil/rfq/rfqrec.aspx?sn=SPE7MC27T1626)