When we order an alternative Linx 4900/5900 pump head(FA72101), here are three things we need to figure out first
- Does the pump head with pressure release or not. We can take a look at the top of the pump head, if it’s with three small holes on it, it’s without pressure release, if there are four holes, the 4th hole is for pressure release.
- Measure the length of rotor. There are two types of pump, long rotor with short motor and short rotor with long motor, by measuring the length of the rotor, we will know which type of pump is it.
- Motor output power. Despite we don’t need to order the motor, telling me the motor output power is necessary to order a pump head.


However, if it’s not convenient to measure the rotor and tell the motor output power, we could order a complete pump head with motor(LB-PP0354). Please send me a picture of your complete pump assembly, then I can tell whether it’s long rotor or short rotor and arrange asap.
For more info, please feel free to drop us an inquiry.