The Pneumatic Modular Control System (MCS) is designed to ease the assembly and installation of a pneumatic control system in several ways. The modularity of design and assembly speeds the prebuilding of panels and simplifies field hookup through the use of easily identified connections. The modular format allows the use of simplified engineering drawing symbols developed specifically for modular controls so that panels may be built as drawn directly from the submittal drawings. In addition, final system start-up and calibration checks are made easier because the panels match the drawings they were built from, thereby saving field labor time.

• Most compact panel-mounted pneumatic control system. Several control devices perform dual functions. No control device need be made up of separate parts.
• All modular control devices mount on MCS-S socket, which snaplocks to MCS-BP backplate (available in several sizes)
• Sockets form pneumatic piping field above control devices, and provide places for slip-in electrical connectors below them, physically separating pneumatic tubing and wiring
• Control devices may be removed from socket and replaced without disturbing tubing, wiring, or other control devices
• Pneumodular controllers, relays and switches may be mounted as stand-alone devices using available mounting brackets

The volume booster relay is a proportioning device designed for use in pneumatic control systems where the application requires amplifying the volume of control air to final control devices. System transmission lag is minimized by using this relay in conjunction with a proportional controller operating several diaphgragm valves or damper actuators. This device may also be used as a low pressure selector when the application requires the comparison, selection and transmission of the lower of two proportional input signals.
The high pressure selector relay is a device designed for use in pneumatic control systems where the application requires the comparison, selection, and transmission of the higher of two proportional input signals.