# San Diego Unified School District Planet bids #PC27-0515-52-00-00

Replace Two Fire-Main Backflow Preventers at Thurgood Marshall Middle School

**Posted:** October 27, 2026
**Respond By:** November 06, 2026
**Identifier:** PC27-0515-52-00-00
**NAICS:** 238220

San Diego Unified School District is seeking bids to replace the fire-main backflow preventers at Thurgood Marshall Middle School.
- **Buyer:** San Diego Unified School District, Facilities Planning and Construction, San Diego, California.
- **Procurement:** Replace two existing 10-inch fire-main backflow preventer assemblies.
  - **Named OEM:** Watts — model 909RPDA OS&Y, or an approved equal.
  - Provide new gaskets and bolt kits, plus four pipe stands; gasket and bolt-kit quantities are not specified.
- **Services:** Remove the existing assemblies, install the replacements and related components, and test and certify the completed backflow assemblies.
- **Notable requirements:** Bidders must hold a C36 license. The stated estimated project value is $115,000.

### Description

The District is seeking electronic bids to remove and replace two existing 10-inch fire main backflow preventers at Thurgood Marshall Middle School with new Watts 909RPDA OS&Y assemblies or approved equal. Work includes new gaskets, bolt kits, four pipe stands, and backflow testing and certification, and is to be performed on District property. A mandatory pre-bid meeting/site walk is scheduled for October 29, 2026; prospective attendees must preregister with the District. The bid deadline is November 6, 2026, at 10:00, and a C36 license is required.

[View original listing](https://vendors.planetbids.com/portal/43764/bo/bo-detail/147659)