Rising Stem Gate Valve Extension

The thread on the bottom end of the valve and the guide groove on the disc will rotate it becomes linear motion that is the operating torque is changed to operating thrust.

Rising stem gate valve extension.

Ideal for gate valves. Each extension stem has a centering ring to keep it aligned in the valve box. Available in sizes 2 through 96 our metal seated solid wedge valves are designed in accordance with awwa c500 standards as well as ansi and astm standards. Trumbull offers telescoping valves in either rising stem or non rising stem designs.

The valve stem nut is set on the gate and the rotation of the handwheel drives the rotation of the valve stem to lift the gate. You can see in the image. For a rising stem valve the stem will go up while opening the valve and move down when you close the valve. Cast carbon steel standard port flanged gate valve.

Trumbull round valve extension stems are used to raise the elevation of both buried and in plant valves having a 2 square operating nut. Non rising stem gate valve is also called rotating stem gate valve also called dark stem wedge gate valve. Other shafts available on request. It has a 2 heavy square socket on one end and a 2 heavy square nut on the other.

The slip tubes are available in a variety of sizes and materials the most common materials being 304 stainless steel and sch. The ascension screw of rising stem flanged gate valve is exposed outside the nut cling to the handwheel is fixed not rotating axial movement the rotation of the screw and gate only relative motion without relative axial displacement of the disc and stem up and down together. Centering ring helps keep debris from falling to the bottom and doubles as opening direction indicator. The lead screw can be seen while the non rising stem gate valve cannot.

We can also adapt to valves without 2 nut. Make your own extension stems to the exact required length quickly. Shafts are 1 schedule 40 pipe. Usually there is a trapezoidal thread at the bottom end of the valve stem.

Standard 2 square nut on top and 2 socket on bottom. The rising stem gate valve can be seen from the appearance whether the valve is closed or open. Designed and manufactured for use in wastewater and sewage applications pratt gate valves are produced in both non rising stem nrs and outside screw yoke os y versions. In inside screw design the threaded portion of the stem is in contact with the flow medium and when you open the valve handwheel rise with the stem.

The extension stem is made up of an extension rod or pipe a 2 square top wrench nut or handwheel and a bottom wrench nut coupling. Great to have in stock in case of a sudden need for more stems. Rotork supply valve accessories including mounting kits spools pedestals extension spindles switchboxes positioners handwheels and chainwheels. The range is completed by economical hob and ntb hand operators.

William powell co 3003 series 4 in. R g wrenches extensions 21 vogt valves 20 zy tech global industries 19 neway valve 18 apollo conbraco 15 newco valves 15 matco norca 14 dsi forum energy technologies. Valve extension stem kit.