Our great Houston area representative, Delta T Equipment, recently sold 38 type SLR mountings which will support and isolate a 40” diameter pipe.  Eighteen of the mountings were 40,000 lbs. capacity, 2” deflection type SLR-118.  When we supply isolators supporting this kind of weight, we always recommend they use a hydraulic jack to transfer the load from the mount’s stanchions to the spring, which makes the installer’s life much, much easier.  However, hydraulic adjustment requires a taller housing to accommodate the jack and in this case they could not tolerate the additional height so they decided on a standard housing which uses a central adjustment bolt which is threaded into a compression plate on top of the spring.

We don’t supply mounts of this capacity every day and we wanted to be 100% confident they could be adjusted with “hand tools” before shipment.  To make sure, we placed the full mounting in our 750,000 lb. capacity press and loaded it to 40,000 lbs. and went to work adjusting it.  The first 1-1/2” or so was not too bad, but the last ½” was a bear and required 3 of us pushing a 6 ft. lever to get the job done.  I am sure the more seasoned guys working in the field will make quicker work of it than our crew did.   We are pleased to enclose some photos of our efforts.