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Electric resistors for heating as a multipurpose spare part
Using electric resistors to heat fluids in boilers is an old but still valid solution, especially for those applications where fuels are not permitted, or where the volumes in play are not large. In Gnali Bocia’s reference catalogue, you can find electric resistors for heating that are [...]

Radiators and air vent valves, the perfect couple
One of the critical points of a system from the gas and air accumulation standpoint is the radiator, which needs to be bled regularly in order to operate efficiently. Unfortunately, no-one ever remembers to do this until difficulties occur. Automatic air vent valves, applied in the place of [...]

Water and gas pressure reducing valves
Pressure reducing valves are important for the safety of every system. In the gnali bocia catalogue you can find reducers for both water and gas. The first is a compensated-type pressure reducing valve that offers an extremely stable performance independently from inflow pressure variations [...]

Nickel plated threaded brass fittings
Nickel plating is a hardening surface treatment that makes the product surface highly resistant to the wear that is typical of assembly operations, and to corrosion, which can be generated by permanence in humid environments. The choice of this particular treatment to coat threaded brass [...]

Manifolds for sanitary installations with adjustment screw
In the gnali bocia catalogue you can find a wide range of manifolds for sanitary installations equipped with regulating valve. The manifolds are available in the version with 40 mm between the axes and the more compact version with 35 mm between the axes. These manifolds for sanitary [...]

You don't need an operator, all you need are some air vent valves
As said many times before, automatic air vent valves are useful for eliminating the air and gases that accumulate in systems, and which cause problems during system operation. Air bubbles can, in fact, block some pipe branches, preventing correct heat exchange. Our air vent valves, especially [...]

Hydraulic fittings and material internal stress
The hydraulic fittings are sealed using gas threads of the conical type, with the addition of a sealing material on the thread. The material used to make these items is brass that has undergone a hot stamping process which, if not carried out correctly, can lead to serious corrosion cracking [...]

Air venting valves and accumulations in systems
Why should you install an air venting valve?  The main reason is to eliminate the air and gas that accumulate in some areas of the system and which can prevent the fluid from flowing correctly through it. Air pockets can appear as a result of many different causes, but the main ones are: [...]

Manifolds for water and multilayer pipes
One of the most appreciated solutions to distribution in hot water systems is manifolds for water, made of stamped brass and worked on cutting-edge transfer machinery. These manifolds for water can be installed quickly without having to create chased intersections if combined with fittings for [...]

Electric resistors for water heaters and the problem of system corrosion
Electric resistors for water heaters induce vagrant currents into circuits which can favour spot corrosion. This damages the system components, starting from the electric resistors and ending with the boiler walls. Sacrificial anodes of magnesium are usually installed to protect these [...]

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