HOSES AND FITTINGS FOR INDUSTRY

Pneumatic dampers are mounted in vent connections of valves and unused connections of cylinders to reduce noise and protect the system from external contamination.

According to ISO 5599 standard, valve schematic diagrams are designated with numbers (previously letters). Example of designation: 5/2 monostable valve, solenoid operated with pneumatic assistance (with external pilot supply), spring return: 1 - supply connection port,2, 4 - working or outlet connection ports,3, 5 - outlet to the atmosphere (venting connection ports),12, 14 - control [...]

Monostable valve - continuous control - when a control signal disappears, a spring forces it to return to its resting position. Bistable valve - impulse control - after a control signal disappears, it remains in its position (no spring). For example, electrically controlled monostable valves have one solenoid on one side and bistable valves have [...]

Directional control valves are identified by the number of flow paths (number of connections) and the number of positions (number of square boxes on a valve schematic diagram). In the example below, the pneumatically controlled valve is a 3-way/2-position valve in a resting position (without control signal) normally closed NC: Normally Closed):  

Directional control valves (distribution manifolds) control the direction of compressed air flow. In a pneumatic system, they usually work as controllers for actuators, and they switch on and switch off the operation of, for example, a pneumatic cylinder.