Plant accessories

Complementary components to complete and optimise your plant: actuators, instrumentation, expansion joints, vibration dampeners, expansion vessels and more.

Valve actuators

Electric (ON/OFF and modulating 4-20mA), pneumatic (double and single-acting) and manual override. Torques from 5 to 10,000 Nm. ATEX versions available. Accessories: pilot solenoids (NAMUR), limit switches, positioners.

Instrumentation

Bourdon tube and diaphragm pressure gauges (DN 63-160), pressure switches, 4-20mA transmitters. Bimetallic and gas-filled thermometers, thermostats, PT100 probes and thermowells. Level indicators.

Expansion joints and vibration dampeners

Bellows expansion joints in stainless steel (axial, lateral, angular) for thermal pipe movements. Rubber flexible connectors for pump vibration isolation. DN 15-600, -200°C to +550°C.

Filters, vessels and more

Y-strainers, basket filters, duplex filters, temporary cone strainers. Membrane expansion vessels (2-5,000 litres). Pressure reducing valves, safety valves, air vents, dirt separators.

Domande frequenti

What plant accessories does Roffia supply?
Roffia supplies a complete range: actuators (electric and pneumatic), expansion joints, flow meters, vibration dampeners, gaskets, level and flow indicators, pressure gauges, pressure switches, thermometers and thermostats, pipe supports and expansion vessels. Stock availability in Cremona with delivery across Italy and internationally.
How to choose an actuator for valves?
Selection depends on: valve type (quarter-turn for ball/butterfly, multi-turn for gate), required torque (Nm), available supply (compressed air for pneumatic, 24V/230V/400V for electric), control type (on/off or modulating) and environment (ATEX for explosion-risk zones). Roffia distributes actuators from leading brands.
Does Roffia supply process instrumentation?
Yes. We supply pressure gauges (dry and glycerine-filled), thermometers (bimetallic and gas), pressure switches and thermostats for process monitoring and control. Also level indicators (sight glass and magnetic) and flow indicators to verify flow in pipework. Fast delivery from Cremona across Northern Italy.

Need accessories?

Tell us the component type, operating conditions (pressure, temperature, fluid) and connection size. We will provide a complete proposal.

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