ZEM Series

ZEM Injector – Series 32, 33, 34, 35, 39

The ZEM Series injector line are positive displacement injectors (PDI) that deliver precise and controlled lubrication outputs which meet exact requirements for diverse applications. They are
pre-fi xed volumetric injectors that help ensure each lubrication point receives the proper amount of lubricant. Which means you won’t have to worry about over or under lubrication.

Operation
ZEM Series injectors are classic PDIs. Reliable. Accurate. As pressure builds in the manifold, the piston in the injector moves forward, discharging a set amount of lubricant to the application point.
As the pressure is relieved, a compression spring returns the piston to its original position. This movement recharges the injector with more lubricant. The injector is now ready to be fi red again.

Features
+ Handles oils and soft greases
+ Multiple output volumes for diverse application types and points
+ Modular design allows different outputs within a single manifold
+ Can be used in the same system with other ZEM series injectors
+ Optional push-to-connect fittings help reduce installation labor costs

System Requirements
It is important to note that the lubricating pump used in the ZEM Series injectors system must build
pressure to 15 bar (220 psi) at the injector in order to actuate injector discharge. The recommended
operating pressure is 21 bar (300 psi). Also, a pressure relief valve is required to quickly drop the
line pressure to the 0.3 to 0.7 bar (5 to 11 psi) range between lubrication cycles. This allows the
injectors to be fully recharged.
ZEM 32 and 33 Series injectors are used in conjunction with manifolds or tee fi ttings. Other ZEM
Series injectors are manufactured with multiple outlet manifolds. All ZEM injectors are available with
either a compression style or push-to-connect outlet fi tting.