Shand & Jurs - Model 94040 - Spring Loaded Conservation Vent (Pressure/Vacuum)
Higher pressure settings are accommodated using a unique method of spring loading which ensures highly reliable operation and reduces excessive venting of product at a relatively low cost. Pressure settings range from 1 psi through 15 psi for sizes 2' to 10' and up to 10 psi for the 12' size. Screw and flange type connections are offered for the 2' and 3' size and flange only for sizes 4' to 12'. Vacuum protection is provided utilizing a weight loaded vertical lift pallet assembly that assures optimum air flow into tank.
The pallet to seat diaphragm is cushion seated Teflon for long service life and optimum reliability. This diaphragm helps to ensure a high resistance to any ice and gum formations, prevents the pallet from sticking to the seat. The carefully engineered body, seat and pallet offers a superior combination of tight sealing and high capacity at lower over-pressure.
One of the most important features which should be noted in the Model 94040 design is the variety of construction materials available. A wide range of highly corrosive and toxic products common to the petroleum, petro-chemical and chemical industries, require that a conservation valve be able to with stand this environment and still function reliably. For few instances where our standard materials may not be suitable, optional materials are readily available.
Standard materials offered are aluminum, cast iron, cast steel and 316 stainless steel. Standard seats are aluminum and 316 stainless steel.
- Available with Expanda-Seal Option
- Low copper aluminum alloy minimizes special materials needs
- Guided pressure pallet assures smooth lift and closure
- Unique diaphragm construction assures positive seal and minimal blow down
- Easy inspection of internal components