Limitorque QXB-2 Actuator

The City of Houston is soliciting bids on four new Limitorque QXB-2 electric quarter-turn actuators for the Sewage and Wastewater Treatment Plant, with bids due September 3, 2026.

The actuators must be new, unused, current-year production, factory assembled, fully serviced, and free from defects. Specified electrical and performance parameters include 24 VDC control voltage, single-phase 250 VAC maximum motor supply, 250 ft-lbs. minimum output torque, and adjustable operating time of 8–30 seconds. Integral features required are position sensors, thermal motor sensors, torque sensors, Bluetooth interface, and infrared communication capability. The units must be complete with all standard factory components, mounting hardware, and accessories for installation integration. Bidders proposing equivalent products must submit complete technical documentation and revised engineering designs, with all deviations or exceptions fully described and justified.

Delivery is to the City's Maintenance Facility at 3100 Genoa Red Bluff Rd, Houston, TX 77015, Monday through Friday between 7:00 a.m. and 3:30 p.m. Central Time, excluding City-recognized holidays, with coordination through Richard Carter (832-331-9776) and Christopher Shaw (832-845-7052). The City performs installation, startup, and commissioning upon delivery and acceptance.

The warranty requirement is 18 months from shipment or 12 months from start-up, whichever is less, covering 100 percent of parts and labor for defects in materials and workmanship, with all freight charges to and from the vendor's repair facility borne by the seller during the warranty period. Contractors must maintain fully stocked parts and service facilities subject to City inspection. Deliverables include two operations and maintenance manuals. Bids lacking sufficient technical literature or failing to respond to each specification section will be rejected as non-responsive. Internal Reference #: PR 10359552.