GENERAL CATALOGUE API

Introduction General technical information

Table of symbols

Symbol

Meaning

Symbol

Meaning

Symbol

Meaning

Cooler (with representation of the cooling pipes)

3/3-way valve with closed neutral position

Mechanical operation by uni-directional roller

4/3-way valve with closed neutral position

Pneumatic operation with pressure

Vessel (air-reservoir)

4/3-way valve exhausting in neutral position

Pneumatic operation with pressure exhaust

Silencer

Pneumatic operation by different control surfaces (in the symbol the larger rectangle represents the larger control surface)

5/3-way valve with closed neutral position

Pressure source

5/3-way valve with exhausting neutral position

Pneumatic operation with pressure to the pilot

Exhaust

General manual operation (without specifying type of control)

Pressure gauge

Electrical operation

Manual operation by pushbutton

Combined operation by solenoid and pilot valve

Visual display

2/2-way valve N.C. (two ports, closed in neutral position) 2/2-way valve N.O. (two ports, flow in neutral position) 3/2-way valve N.C. (in 1 st switch position inlet is closed) 3/2-way valve N.O. (in the 2 nd position air is exhausted or the return flow line is closed) 4/2-way valve (with two open positions and one exhaust)

Manual operation by pushbutton with mechanical grip

Combined operation: by solenoid, pilot valve and generic manual Generically electrical and manual operation and piloted at both ends: two stable positions Generically electric and manual operation and piloted for three position valve

Manual operation by lever

Manual operation by pedal

2 (A)

Mechanical operation by stem or key

Shuttle valve ("OR" type)

1 (P) 3 (R)

Mechanical operation by spring

Two pressure valve ("AND" type)

5/2-way valve (with two open positions and two exhausts)

Mechanical operation by roller

Quick-exhaust valve

II.3