Application of overvoltage protector
Adjustable overvoltage protector protects the gauge when the pressure exceeds the pressure rating
Stainless steel models can be used in corrosive media and corrosive environments
Process Industry: Mechanical Engineering and Equipment Construction, Chemical and Petrochemical Industries, Power Stations, Mining, Onshore and Offshore Applications, and Environmental Technology

Functional Characteristics of Overvoltage Protector
Type A and Type B Pressure Interface Design
7 different setting ranges available
Nominal pressure up to 60 MPa
Overvoltage safety protection up to 100 MPa
Vacuum Safety

Description of Overvoltage Protector
Overvoltage protector includes a spring-loaded piston valve. The spring keeps the valve open under normal pressure conditions. When the system pressure exceeds the set pressure, the spring is affected by the force, causing the valve to close. The valve will remain closed until the system pressure drop is close to 25% of the closing pressure; then the spring will reopen the valve under pressure.

The factory settings of the overvoltage protector can be found in the data sheet.

Steps to change your settings:
Rotate the adjusting screw clockwise ⇒ The closing pressure becomes larger (rotating the adjusting screw counterclockwise ⇒ the closing pressure becomes smaller)
Do not use overvoltage protectors as device controls!

Settings during factory installation
When ordering with the pressure gauge, the overvoltage protector setting is 1.1 times the maximum range value.

Product Standard Features
Pressure interface
Type A: G ½ external or internal thread
Type B:½ NPT male or female
(See size chart on page 2)
Valve body
Optional brass (sturdy union nut with steel) or stainless steel (for joint nut with 1.4571 stainless steel)
O-rings
FPM
Working temperature
Maximum +80 °C