The Powell Valve. Precision for a new ball-game.

The William Powell Company has been making gate, globe and check valves since 1846. They serve markets like petrochem, pulp and paper and power generation all of which are very high pressure. And, there’s something unique that’s found on high-pressure Powell valves, the tapered body ID.

Now, most valves have a body ID that has a straight wall so most graphite VSG’s are made to this specification. But a Powell valve is tapered 5 degrees on the body ID and that’s a whole different ball-game. It means that EGC must receive exact measurements to make a seal that has sufficient density, mass and geometry to construct a Powell seal that works right the first time.

So, what does this mean to you?

At the outset, you must measure the valve with precise attention to detail using the Powell data collection sheet. It’s not enough to know bonnet neck height and toe width. EGC needs to know the dimensions of the valve body minor ID, major ID and the valve wall height above the taper to engineer a seal that has the right density to fit between the valve body and the bonnet.

In all, there are at least twelve dimensions that are on the Powell data sheet and not on the VSG data sheet. As a valve repair and maintenance person, it’s extremely important that you measure and record ALL the dimensions on the Powell data sheet before you order a graphite pressure seal from EGC. If you don’t, an EGC engineer will call you and ask you for the same dimensions again and that could mean a delay in shipping time. And we all know how a power plant reacts to downtime.

So, record the dimensions on the Powell data sheet and we’ll engineer and manufacture your graphite pressure seal either in 2 weeks standard lead time OR an expedited time of 48 or 24 hours.