Pietro Fiorentini S.p.A. products

The butterfly valve BF 31 is an interception device able to guarantee low pressure losses. It may be used also for intercepting liquids when a hermetic seal, low pressure losses and compact construction in the flow direction are required. Suitable for use with natural gas and previously filtered non-corrosive gases, it is mainly used in medium and low pressure gas distribution networks.

In the floating valve the ball is not rigidly held on its rotational axis and so is free to float between seats. Sealing is achieved by the action of the pressure, which pushes the ball against a seat and the body construction is two pieces, bolted joint, made by forging, forged or rolled bar. Mainly used for high-pressure transmission systems and for medium pressure gas distribution networks, it is suitable for use with natural gas and previously filtered non-corrosive gases. The floating ball valves are Hydrogen Ready for NG-H2 blending.

The ball of the floating valve is mounted on a trunnion which supports the pressure load. The seats are spring energized and the body construction is one piece, made by forging or casting. The ball is inserted from the top and it’s possible to disassembly the valve in line. Mainly used for high-pressure transmission systems and for medium pressure gas distribution networks, it can be used with natural gas and previously filtered non-corrosive gases. The trunnion ball valves are Hydrogen Ready for NG-H₂ blending.

The control ball valve Deltaflux is the ideal solution for all fluid control applications where high differential pressure or great flow rates are involved. The refined design of the rotating trim allows simultaneously high flow rate coefficients Cv and minimum pressure drops in fully open position. This device, particularly suitable for high-pressure transmission systems and for medium pressure distribution networks, can be used with natural gas and previously filtered non-corrosive gases.

Reflux 919 by Pietro Fiorentini is a control diaphragm valve especially designed for natural gas or other preliminarily filtered non-corrosive gases. It may be supplied in the direct-action (air to close), or in the reverse action type (air to open). This device is mainly used in high-pressure transmission systems and in medium pressure gas distribution networks.

The slam shut valve HBC 975 by Pietro Fiorentini is a safety device which quickly intercepts gas flow when the pressure it is monitoring reaches a pre-set limit due to any anomaly in the system, or when required by the operator at the installation point or from a remote point. Particularly suitable for high-pressure transmission systems, this device can be used with natural gas and previously treated, non corrosive gaseous fluids.

In the pilot-operated relief valve PVS 782 by Pietro Fiorentini, the opening and the closing of the main plug is controlled by a pilot device which is very sensitive to the variations of the in-line pressures. Particularly suitable for high-pressure transmission systems and for medium pressure gas distribution networks, this device can be used with natural gas and previously treated, non corrosive gaseous fluids.

The direct-operated relief valve VS/AM 58 by Pietro Fiorentini is a safety device which vents gas when the system pressure exceeds the set value due to temporary events, such as expansion due to rise in gas temperature or downstream pressure shocks caused by sudden changes of flow rate. Particularly suitable in high-pressure transmission systems and in medium pressure gas distribution networks, this device can be used with natural gas and previously treated, non corrosive gaseous fluids.

Aperflux 101 is pilot controlled pressure regulator for medium and high pressure. Aperflux is a `fail to open` regulator i.e. it opens in following conditions: failure of main diaphragm; failure of pilot diaphragm/s; failure of pilot seat valve; lack of feeding to the pilot loop. These regulators are siuitable for use with previously filtered, non corrosive gases.

Pressure regulators series HP100 - HP100/B, are regulators of the self-driven type, spring-loaded, with balanced plug, diaphragm command by contrast action with spring, suitable for medium and high pressures. They are used in distributing  natural gas, LPG. and non- corrosive gases, where good performances in terms of regulation and fast response to  flow rate variations are required. They are widely used in the 1st stage reductions for house and industrial applications.