Pulsation dampeners VPHP
In-line technology
Valisi VPHP In-Line Pulsation Dampeners
reduce vibrations, pulsations, and hydraulic shocks in the system, whilst increasing the life of the hose and preventing damage in pumps, valves, and process instrumentation.
A reinforced rubber hose is mounted inside a metallic, cylindrical pressure vessel; compressed air or nitrogen fills the space between them, allowing the hose to adjust its volume according to the pressure at pump discharge, compensating for any pulsation in the liquid flow. VPHP Pulsation Dampeners can decrease the
pressure fluctuations caused by the operation of the pump by 90%, granting a safer system and environment.
VPHP Pulsation Dampeners are available in four sizes and are suitable for models VPH25 to VPH125 (shoe pumps) and N5N to N7N (roller pumps). Pulsation dampeners comply with European PED Directive 2014/68/EU. NBR-FDA hoses can be used for food applications.
| VPHP MODEL | STANDARD CONNECTIONS | FOR PUMP |
| VPHP40 | DIN PN40 or ANSI 150# multi-diameter flange | VPH25-32-40-40L and N5N – N6N |
| VPHP65 | DIN PN40 or ANSI 150# multi-diameter flange | VPH50-65 and N7N |
| VPHP100 | DIN PN40 or ANSI 150# multi-diameter flange | VPH80S-80-100 |
| VPHP125 | DIN DN125/PN40 or ANSI 5”/150# flange | VPH125 |
| Optional: TRI-CLAMP or DIN11851 connections | ||
THE DAMPENING EFFECTS
The following graph shows the difference in efficiency between a system with
a static discharge line and one with a Valisi VPHP Pulsation Dampener:
Valisi VPHP Pulsation Dampeners
Valisi VPHP Pulsation Dampeners can reduce the pulsations by 90%, transforming a pulsating flow
into a quasi-linear one. They are extremely effective in improving the performance of your system by
reducing flow pulsations and their negative impacts on piping systems.
| MODEL | VPHP40 | VPHP65 | VPHP100 | VPHP125 |
| Weight (Kg) | 30 | 90 | 140 | 160 |
| D (mm) | 169 | 274 | 324 | 324 |
| H (mm) | 290 | 395 | 460 | 460 |
| L (tot.) (mm) | 800 | 962 | 1370 | 1370 |
| L (hose) (mm) | 750 | 910 | 1280 | 1320 |
| Hose Øe & Øi (mm) | 67×40 | 80×50 | 114×100 | 167,5×125 |
| STD. CONNECTION UNI EN 1092-1 TYPE A | ||||
| UNI | DN25/32/40 PN40 FF | DN50/65 PN40 FF | DN80/100 PN40 FF | DN125 PN40 FF |
| OPTION CONNECTION ASME/ANSI B16.5 | ||||
| ANSI | 1”, 1¼”, 1½” #150FF | 2”, 2½” #150 F | 3”, 4” #150 FF | 5” #150 FF |
| OPTION POLYPROPILENE CONNECTION + UNI OR ANSI FLANGE | ||||
| OPTION PVDF CONNECTION + UNI OR ANSI FLANGE | ||||
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