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These pumps are built on a P30 and P50 frames. They have one piece drive shaft and gears that are held up by roller bearings. It has pressure balance thrust plates give a seal that has stable sealing thru out the pump. The relief valve gives the pump and the cylinder circuit much needed protection. When the three position valve is in the upward position and when it is in the position it gives relief by not letting it overload itself. The hold position it gives port relief aid to the cylinder from the shock load while the truck is...

These flexible membranes that seal and isolate an enclosure. The flexible nature of this seal allows pressure effects to cross the barrier but not the material being contained. Common uses for diaphragm seals are to protect pressure sensors from the fluid whose pressure is being measured. There are some usual designs and they are flat, dish shaped, deep dish and convoluted. When it is convoluted the center part or the piston section can be shaped so that it is on the same plane as the flange or shaped in the position above or below it. The sealing area is the...

These are some heavy duty cylinders, they have 3000 PSI and a 2″ – 12″ bore. The rod seals are polyurethane polypak. The piston seals are glass filled teflon with oring expander and bronze filled teflon ear bands. Ports are SAE straight thread oring. There are some other features you can have added to your cylinder such as all ports will be located 90 degrees to pivot pin unless you want it another way. They can do port of N.P.T. manifold sub plates, flange ports, fluid line connections and cartridge blocks. It can have liner bearings that are self aligning...

These ST Series standard duty cylinders, they have 3000 PSI and a 2″ – 6″ bore and the NW Series are the medium duty . They have a 2500 PSI and bore size of 2″ to 4″. . The rod seals are polyurethane polypak. The piston seals are glass filled teflon with oring expander . Ports are SAE straight thread oring. The rod seals and pistons seals on the NW are buna oring with an anti extrusion back up washer. There are some other features you can have added to your cylinder such as all ports will be located 90...

These hydraulic cylinder diagrams and charts tell about different features. You can have flange mounts and trunnion mounts. There are accessories that can be added like a female eye, female clevis and pivot pin. Tell which parts numbers have that feature. Next there are Rod Diameters for UT, ST and NW Series Cylinders. This chart explains different cylinders styles. The top cylinder is an AS Series, it is an air and hydraulic cylinder with tubes and pistons. You can can get magnetic switches for lets you see the position indicator. The middle cylinder is a R2, it is in a...