Pneumercator PK4 Probe 4" Riser Mount Kit, Quick-Release Lockable Cap for MP45xS/MP55xS Probes is a 4" NPT riser mounting kit that provides a “soft-mount” installation method for Pneumercator rigid magnetostrictive tank gauging probes in underground and vertical storage tanks.

Soft-Mount 4" Riser Installation: The PK4 kit allows the probe to rest on the tank bottom while being stabilized within a 4" riser without rigid attachment, supporting typical MP45xS/MP55xS probe lengths up to about 15 feet and simplifying installation and servicing by raising or lowering the probe by its cable.

Quick-Release, Lockable Cap: A 4" cap assembly with a quick-release adapter lets the cap be removed without disturbing conduit connections and provides a padlock point to prevent unauthorized access to the probe and riser.

Integrated Cable Compression Fitting: The cap includes a cable compression fitting that grips and seals the probe cable, maintaining a leak-resistant riser termination while allowing slack adjustment before tightening the cable grip.

For 4" NPT Riser Pipes: PK4 mounts on a 4" NPT riser with sufficient height above the tank roof to accommodate the cap, cable loop, and service access, providing a clean, protected termination for the probe and wiring.

Typical Applications: The PK4 riser mount kit is used on underground storage tanks and vertical storage tanks where a 4" riser is available and where quick, lockable access to the probe is needed for inspection, adjustment, or replacement.

Installation Notes: A small slack loop in the cable should be left below the compression fitting to avoid strain on the probe and junction box wiring, and direct-mount kits are generally preferred when probe lengths exceed roughly 15 feet.