HP -- GENERAL INFORMATION

HP HP22SA – HP61DA – HP121DA –

The Brand, hand operated hydraulic pump comes in three basic models HP121DA, HP61DA and HP22SA. Each one of these models comes with a relief that can be adjusted manually to suit the customer’s requirements. Brand has also redesigned the outlet check seat for zero leakage. The zero leak seat was created by utilizing an o’ring seal to replace the steel ball seal. The NT (no tank) option does not have a tank, pressure relief and release valve. To use the NT option the customer must connect the inlet of the hand pump to an external reservoir (external reservoir is not supplied by Brand). The TL (2 in. tank) option has a small tank, pressure relief and release valve. To use the TL option the customer must connect the fill port on the tank to an external reservoir (external reservoir is not supplied by Brand). When mounting the NT or TL option, the pump should be placed below the fluid level of the external reservoir. All standard tanks have a 1/4” NPT filler plug at the top of the tank.

HP22SA - has a single-acting piston that can pump 0.20 in3 (3.3 cm3) per full cycle. The term singleacting means that the piston only pumps fluid when the handle is pulled away from the pump. The piston does not displace fluid when the handle is pushed towards the pump. The pressure rating is higher then the HP121DA because it takes less force to displace the smaller surface area of the piston. This pump is typically used in applications that require low volume displacement and high pressure.
HP61DA - has a double-acting piston that can pump 0.60 in3 (9.8 cm3) per full cycle. The term doubleacting means that the piston pumps fluid when the handle is pushed and pulled. The pressure rating is higher then the HP121DA because it takes less force to displace the piston. This pump is typically used in applications that require medium volume displacement and medium pressure.
HP121DA - has a large double-acting piston that can pump 1.20 in3 (19.7 cm3) per full cycle. The term double-acting means that the piston pumps fluid when the handle is pushed and pulled. The pressure rating is lower then the HP22SA and HP61DA because it takes a greater amount of force to displace a piston that has a large surface area. This pump is typically used in applications that require high volume displacement and lower pressure.

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