BD Derivative Booster

Actuation accessories

The Derivative Booster (model BD) is used in conjunction with a positioner on a control valve to increase stroking speed on pneumatic double acting actuators. It has been designed to exhaust one actuator chamber and pressurize the other at the same time. In this way, a short stroking time in one direction can be achieved using just one device. This item is activated by the exhaust flow of the positioner.

Exclusive manifold mounting system. It is a special STI application to connect our accessories. Fittings or nipples are not necessary as the connection is achieved using machined connection faces with sealing ‘o’ ring. This system saves time for assembly, reduces cost on items such as fittings, reducing inventory and the shortened dimensions save space.

• Standard, offshore, sandstorm and copper-free ambient conditions.
• Single and double acting actuators.
• Low and high ambient temperature.