BHP Low Maintenance / Without Maintenance

Resonators are used, instead of bladder or diaphragm pulsation dampeners, with clear advantages:
1.    Very high reduction of the discharge pulsation; the exact value depends especially on the pumped fluid features and piping connections. It is typically higher than 60%.
2.    Complete customization, as per customers requests and projects specification.
3.    There are no wearing or moving parts in the full equipment.
4.    It’s a dampener completely without maintenance.

Construction material can be customized depending on the pumped fluid and end.user specification; as a standard, FOX dampeners are in stainless steel AISI 316 L but materials like: DSS (Duplex Stainless Steel), SDSS (Super Duplex Stainless Steel), Alloy-20, Hastelloy-C and Carbon Steel can be foreseen and painted, as per FOX painting procedure for marine and corrosive environments or as per end-user specification.

Volumes can be customized up to 5.000 liters; FOX is always suggesting to share all the necessary operating conditions, in order to be in a position to select the most appropriate volume for your pump.
The operating principle of the resonator is the resonance. The frequencies compensation generated by the pulsations are reduced by the internal design of the resonator and a key factor is the pumped fluid compressibility value (bulk modulus) that has to be considered while sizing the resonator.

Process connections (in & out flanges) are customized as per the requirement of the customer, as well as their position. As a standard a 180° is considered but we can foresee a 90° angle on the outer flange.

The same level of customization is foreseen for the vent & drain connections, as a standard without counter-flanges. We can consider blind flanges with all the relevant bolts, nuts and spiral wound gaskets or metallic ring joint, depending on the flange type considered (RF or RTJ).