3709 – Pneumatic Lock-Up Valve
The Type 3709 pneumatic lock-up valve is designed to work in all general industrial applications. The lock-up valve is used to shut off the signal pressure line of pneumatic actuators either when the air supply falls below an adjusted value or upon complete air supply failure. This causes the actuator to remain in its last position.
3710 – Reversing Amplifier
The Type 3710 reversing amplifier is designed to work in all general industrial applications. The reversing amplifier is used together with single-acting pneumatic or electro-pneumatic positioners or limit switches. The reversing amplifier allows double-acting pneumatic actuators to be operated using single-acting pneumatic / electro-pneumatic positioners or limit Tswitches.
3755 – Pneumatic Volume Booster
The Type 3755 volume booster is designed to work in all general industrial applications. A volume booster is used together with a positioner to increase the positioning speed of pneumatic actuators with a large effective area or travel volume.
The pneumatic volume booster is mounted between the positioner and actuator. It supplies the actuator with an air flow output whose pressure corresponds exactly to the signal pressure, except that it has a much higher volume output.
3770 – Explosion-Proof Field Barrier
The Type 3770 Field Barrier with explosion enclosure is designed to work in all general industrial applications. Field barriers with explosion proof enclosures serve as an interface between intrinsically safe and non-intrinsically safe circuits in hazardous areas.
4708 – Air Filter-Regulator
The Type 4708 series of supply pressure regulators are designed to work in all general industrial applications. These supply pressure regulators are used to provide pneumatic measuring and control equipment with a constant air supply.
The supply pressure regulator reduces and controls up to a maximum pressure of 180 psi in a compressed air net-work to the pressure adjusted at Type 4708.
4748 – Position Transmitter
The Type 4748 analog position transmitter is designed to work in all general industrial applications. This analog position transmitter attaches to control valves as well as Type 4763 electro-pneumatic positioners or Type 4765 pneumatic positioners to convert the valve travel into a continuous output signal between 4 to 20mA.