# City of Riverside PlanetBids #8292

Contractor services for City-furnished 66-inch effluent butterfly valve replacement

**Posted:** October 02, 2026
**Respond By:** October 29, 2026
**Identifier:** 8292
**NAICS:** 237110, 237990

The City of Riverside is seeking a contractor to replace a 66-inch effluent butterfly valve at its Regional Water Quality Control Plant (RWQCP).
- **Government buyer:** City of Riverside, Public Works Department; Finance Department, Purchasing Division.
- **OEMs and vendors:** No valve manufacturer, OEM, or commercial vendor is identified. The City provides the replacement valve.
- **Products and materials:** One City-furnished 66-inch butterfly valve; contractor-furnished flexible couplings and nut-and-bolt gasket kits; and a temporary carbon-steel blocking plate. No part numbers are specified, and quantities for the couplings and gasket kits are not stated.
- **Work requested:** Mobilization; remove and dispose of the existing valve; install and test the replacement; provide and install the couplings and gasket kits; protect and reuse existing flanges and spool pieces; provide bypass pumping; and install and remove the temporary blocking plate, including rebar scanning in the plate area. City personnel will assist with dewatering lines feeding Junction Box No. 17.
- **Notable requirements:** The replacement must be fully operational. Bypass pumping assumes three isolations, and each shutdown is limited to 10 hours. A two-week stabilization period is required between shutdowns unless the City approves otherwise; this period does not count toward contract time.
- **Estimated project value:** $163,000 for the base bid work.

### Description

The City of Riverside Public Works Department is soliciting bids to remove and replace a 66-inch butterfly valve at the RWQCP. The City has pre-purchased the replacement valve, which will be installed in the existing location; the contractor must also furnish and install flexible couplings and nut-bolt gasket kits and protect and reuse the existing flanges and spool pieces. Work includes bypass pumping, temporary carbon-steel blocking plates, removal and disposal of the existing valve, installation and testing of the City-furnished valve, and removal of the temporary blocking plates. A mandatory pre-bid job walk is scheduled, and bidders must hold a California Class A General Engineering or Class C-34 Pipeline Contractor license in good standing.

[View original listing](https://vendors.planetbids.com/portal/39475/bo/bo-detail/146909)