The body seal for the ESPA Basic and NOX 20 pump is a flat seal placed in the parting plane between the front and rear parts of the hydraulic body of the smallest models in the ESPA range.
A correctly functioning seal prevents water from leaking out of the pump and at the same time prevents air from entering the suction section of the hydraulics during operation.
A cracked or hardened seal typically manifests itself as wet patches or dripping at the joint of the pump body, noticeable especially after prolonged operation.
Replacement is a simple service operation requiring no specialist equipment – simply disassemble the pump body, clean the mating surfaces and fit the new seal.
The shared design for both the Basic and NOX 20 models simplifies spare-parts management for service technicians maintaining several types of ESPA pumps.
