Hidryl-com, the answer to Hydril dampers, full opening gives easier service then Hydril dampeners.

Hydril bought Flowguard, who were owned for a short time by Wier who dumped them, then Hydril were themselves taken over by Tenaris, who got rid of them to GE, so burying the Hydril and Flowguard damper business even deeper from the needs of the users.

The Flowguard, now aka Hydril PCBs Ltd., subsidiary of Hydril, sells dampners copied by ex-Hydrotrole Ltd. employees. These PCBs "copies" neglected the use of essential quality features. These dampeners do not have the bladder stabilizing tension webs.

The PCB "copies" allow the anti-extrusion plate to hang loose from the damper bladder. Since the introduction of these designs, there is an enormously increasing requirement for "BLADDERLESS DAMPENERS". From Alaska to Zambia the buzz word is - we need dampers without any of those gas bag bladders in them.

The PipeHugger damper range we offer since 1978 against the Hydril has many advantages over the Hydril mud pump accumulator dampener, and the PipeGuard damper has all the features neglected by Hydril "PCBs"

Even the name Flowguard looks like a play on our registered trade names, both PulseGuard and ShockGuard names, by our ex employees.

See then the dampener difference below.

The reliability and usability of any damper accumulator, for PCBs or otherwise, is dependent on how easily the pulse can get in or out, and separator shape, not just claimed nominal volume.

For an accumulator design to perform, the liquid must be able to freely enter the damper design. The SMALL orifice into these PCB flawed designs, appears deliberately to restrict the flow rate by throttling the fluid.

The choking of free liquid velocity, causes a pressure rise, which is a source of pulsation, so these three apparently produce exactly the opposite of their implied result, full "dampening" .

Fluid path area reduction appears to come from a need to accommodate the end of the gas bag bladder going off center. PCB views etc - show a small hole, presumably in the vain hope that its anti-extrusion button may succeed in covering the mouth; so that their membranes don't vomit into the system.

In stark contrast to the PCB Hydril arrangements suspect performance and reliability, the PulseGuard Ltd "PipeHugger" and "PipeGuard" products, not only have larger porting, but also prevent even more pulsation amplitude by removing the need for directional reversal - because PulseGuard Ltd. equipment has both an in and a different out connection.

"THE DIFFERENCE IS IN THE DETAIL" No wonder the market now calls for BLADDERLESS dampers.

(Fluid Connection Options: Greyloc Hubs, Seaboard Lloyd, Tech Lock, Autoclave, Butech, Hammer Union 1502, Lug Nut, Weco Type, and others.)