Shut-off valve »SYNTESI«, pneumatic, size2, G 1 - Riegler 144871

Shut-off valve »SYNTESI«, pneumatic, size 2, G 1, exhaust G 1/4, p1 = max. 13 bar, T = -10…50 °C, without silencer This device separates the compressed air circuit from the main air supply. It is a three-way valve that relieves the downstream system in the closed position. This makes it useful for maintenance operations or when the air supply to a machine or piece of equipment needs to be shut off. Available in manual, pneumatic or electro-pneumatic versions. On request also available as assisted electro-pneumatic version (for applications where the inlet pressure is outside the electro-pneumatic valve operating range). The version with manual control can be locked with up to two (size 1) and up to three (size 2) padlocks when the valve is in the closed position. Alternatively, a version with a Ø 7 mm hole for a single lock is available on request. On the front and back there is a port (G 1/8 for size 1 and G 1/4 for size 2) that can be used with pressure gauges, pressure switches or as an additional air outlet. A silencer is not included in the delivery for manual and pneumatic actuated shut-off valves. The coil, plug and silencer are not included in the delivery for electric actuated shut-off valves. ATEX version on request!

Technical data

Standards and origin

• Customs tariff number: 84812090
• Country of origin: IT

About System extensions

System extensions add functions to an existing air preparation unit that filters and regulators do not cover, for example an electrically actuated switching valve that turns plant sections on and off and exhausts them when switched off. The 233 items cover threads from G 1/8 to G 1 and run on an inlet pressure of 9 to 16 bar maximum.

What matters when choosing

• Frame size and thread have to match the existing unit. The range documents G 1/8 to G 1 plus size designations from 0 to 600.
• The series decides whether a module can be added to the assembly. Available lines include FUTURA and FUTURA-mini, SYNTESI, multifix and multifix-mini, variobloc as well as G, G-mini and GA-mini. A module only fits the line it was designed for.
• Choose flow rate from the air demand of the installation rather than from the thread alone. Documented values run from 1400 to 18000 l/min.
• Compare the maximum inlet pressure of 9 to 16 bar against your line pressure. Individual modules are rated for an operating pressure of up to 25 bar.
• Select the housing to suit the environment and the mechanical load. Documented materials are PA66 GF60 and technopolymer, die-cast aluminium and zinc, aluminium and nickel-plated brass.

Typical applications

• Switching plant sections on and off from an electrical signal, with simultaneous exhaust
• Extending existing air preparation units in compressed air distribution
• Making machines pressure-free while they are at standstill
• Distribution points on production lines with several consumers
• Installations that carry neutral gases alongside compressed air

Documented data include protection class IP 65 or IP 65 (P 54) to DIN 40050, NBR seals and medium temperatures from -10 °C to 60 or 70 °C depending on the module. Production takes place in Germany, Italy, Poland and China.