Piston Type Valve Actuator: (As Per Specification) (Under Single Stage Two Envelope Bidding Procedure) → For 18" Dia. Valve Cl-600 With Gas Over Oil Operating System For Quarter Turn Valve With Limit Switch, Torque Limiter, Remote Operation & Solenoid Valves 24 Vdc. Qty = 2 Nos. → For 16" Dia. Valve With Gas Over Oil Operating System For Quarter Turn Valve, Local Manual Valve, Open-Close Operation With Power Gas With Hydraulic Pump, Remote Electronic Open-Close Operation. Qty = 4 Nos. Fob/C&F & For (Only For Local Manufacturer As Per Sro 827(1) (EXPIRED)