Standard safety relief valve with controlled rise for fluids and neutral gases
– Max operating pressure: 12 Bar (1,200 kPa)
– Max operating temperature: 120°C
– Opening over pressure +10%
– Closing discard pressure -20%
– 1/2″ x 1/2″ Female connection
– Sizes available: 2; 4; 6; 8; 10Bar calibration
These are mainly used to control the pressure in hydraulic circuits and heat generators with a useful thermal power of less than 35 Kw and in all
cases not requiring the use of a certified valve. For hot water storage heaters intended for consumption, it is possible to use valves manufactured according to the requirements set forth by MD 1.12.75 and by “Collection R” technical specification (R.1.A3).
– The safety valve must be mounted on the system paying attention to the direction of flow specifically indicated on the body.
– The safety valve must be mounted on the top of the storage tank making sure it completely emerges in it (standard valve Series 351 – 352 – 353 – 354)
– The safety valve must be mounted on the supply pipes at a maximum distance of 1m from the generator (certified valve Series 605).
– The safety valve can be mounted both horizontally and vertically, making sure the discharge does not face upwards.
– The inside diameters of the fluid supply and discharge pipes of the safety valve must be no less than their DN.
– The pipes or accessories used to transport discharged fluids must not create bending moments which jeopardise triggering of the valve.
– The equipment, pipes or accessories used to transport fluids must be free at the threadings from residue of prior preparations or processes especially
when the water contains inhibitors capable of developing amines.
– Intentional tampering with the calibration value makes it impossible for the valve to perform the safety function for which it was designed.
– The safety unit should be opened manually once a year to check its efficiency.
– In the event of fluid leakage, pay great attention to interventions on the valve, taking the necessary precautionary measures, especially in the presence
of very high operating temperatures.
– When the cut-off valve has difficulty restoring its sealing features, after discharge interventions, perform some opening and closing manoeuvres by
manually turning the hand wheel of the valve anticlockwise, thus cleaning the concerned parts.
– If the RBM safety valve is not installed and kept in a suitable place, it does not lose its functional and performance features.
– The RBM safety valve must be installed by qualified technicians.
– The valve must be inspected periodically starting from the commissioning date, at a frequency established by legislation in force.
The instructions herein must be complied with mandatorily.