///Water leaks at the sealing head gland nut (HP outlet)
Intensifier: high-pressure side
Water leaks at the sealing head gland nut (HP outlet)
Water at the gland nut where the HP tubing leaves the sealing head comes from the tubing connection.
Safety first: Switch off the pump, release all pressure (open the on/off valve or bleed-down valve) and lock out before you open any high-pressure part. Never put a hand or tool near a running jet.
1Check the causes, most likely first
0 of 3 checked
01HP tube gland nut loose
Most likely
The cone does not seal without the correct torque.
How to check: Torque the tubing gland nut (pressure released).
| Photo | Art. no. | Description | Excl. VAT | |
|---|---|---|---|---|
 | 10259 | Gland nut 1/4" , 10078459
NutKMT |
€ 8.16 | |
 | 10260 | Gland nut 3/8", 10078129
NutKMT |
€ 10.46 | |
 | 11225 | Gland nut, Swivel
NutKMT, Flow, Techni, Accustream |
€ 47.88 | |
 | 11373 | Gland nut, 1/4, UHP, 20452962
NutKMT |
€ 26.28 | |
| 12066 | Gland Nut 1/4" , 701403 (Metric)
NutBFT, Allfi, Bystronic, STM |
€ 20.40 |
02Wrong collar position
Possible
Too many or too few threads behind the collar stop the tube from seating.
How to check: About 1.5 to 2.5 threads should be visible past the collar.
03Fatigue crack in gland nut or tube end
Less likely
Thread fatigue or a cracked tube end leaks even at torque.
How to check: Inspect threads and tube end; replace cracked parts.
Related problems
General advice based on manufacturer manuals and service practice. Always follow the manual of your machine. Not sure? .