Manual Hydraulic Hand Pump0 pages
Shafer™
nnnnManual Hydraulic
nnnnHand Pump
nnnnThe all new balanced piston pump design provides
nnnnan efficient hand pumping system to close or open
nnnnconventional pipeline valves and acts as a standby
nnnnmanually operated system. The all new Shafer
nnnnPump has a balanced ram design to eliminate
nnnnaccidental or uncontrolled action of the pump ram
nnnnin the event that pressurized gas or fluid should
nnnnenter the pump cavity under the piston. The Shafer
nnnnpump also provides an improved hand pump
nnnnsystem which eliminates cavitation, or sucking air,
nnnnby forcing fluid into pump suction chamber during
nnnnthe downward pressure stroke, therefore, providing
nnnna full cavity of oil for the next pressure stroke.
nnnnThis anti-cavitation feature allows the pump to be
nnnnstroked at any speed without drawing a vacuum
nnnninto the pumping chamber. A further provision is the
nnnnautomatic self-neutralizing feature which functions
nnnnin the event that the valve selector is left in either
nnnnthe open or close position after hand pumping.
nnnnThis self-neutralizing feature pilots the valve
nnnncontrols into neutral or automatic when power oil
nnnnor gas is forced into the hand pump system. To
nnnneliminate leaving the pump ram in the up position
nnnnexposed to atmospheric conditions, the pump is
nnnnequipped with a manual operated pressure relief
nnnnvalve for relieving pressure after the pumping cycle
nnnnis complete.
nnnnThis relief valve feature allows the ram to be pulled
nnnnback down into the pump head, thus protecting
nnnnit against corrosive or detrimental atmospheric
nnnnconditions.
nnnnOther improvement features include:
nnnn1. Fully hard-anodized aluminum body
nnnnconstruction for salt atmosphere protection.
nnnn2. Stainless steel port connections for fittings.
nnnn3. Stainless steel pins, bolts and instruction plate.
nnnn4. Improved fulcrum-lever design for higher
nnnnpressure pumping.
nnnn5. Available in 4 and 12 cubic inch /stroke positive
nnnndisplacement models.
nnnnEMERSON
nnnnProcess Management
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