10
PI-078
June 2021
4. Prior to installation, make sure the nozzle has no clogged orifices.
5. For 15,000 psi models
- Apply 3 - 4 wraps of Teflon tape to male
connection thread on the barrel. Apply anti-seize compound over the seal-
ant tape for additional protection against galling in connection threads.
Wrench connection 1 1/2 - 2 turns past hand tight. A minimal thread
engagement of four (4) threads should exist on all Jetstream NPT pipe con-
nections.
For 22,500 psi models
- Apply anti-gall compound to the gland threads
and male cone on control gun front barrel. DO NOT use Teflon tape. Check
blast nozzle size before installing the nozzle. Make sure the nozzle orifices
are not too small in order to prevent excessive system pressure when the
gun’s control valve trigger/pedal is depressed.
6.
Use wrench flats (when available) or a properly adjusted
smooth jaw plier wrench (JS PN 64119) to tighten nozzle. Avoid using pipe
wrench as wrench marks will cause nozzles to crack and fail.
7. Special nozzles requiring a thread locking pin must have the pin
installed prior to use or the nozzle may unscrew from the lance while in
service and cause the lance to blow back toward the operator.
8. With nozzles requiring adjustment, always read applicable instructions.
9. Blocked orifice(s) can cause excessive system pressure and failure. If
orifice(s) appear clogged or partially blocked with dirt or debris, remove
nozzle from control gun or lance and clean immediately.
10. Remove nozzle from service if:
A. Nozzle is split or damaged;
B. Nozzle sidewall is worn by more than 25% at any point;
C. Nozzle’s ability to hold pressure is questionable
D. Threads are missing or damaged
FLEXIBLE TUBE CLEANING LANCES
1. Read General Safety
section and Nozzle Safety Warnings prior to
connecting flex lances.
2. Do not
use a flex lance with a burst rating less than 2.25 times the
pressure at which it will operate. 10,000 psi operating pressure flex lances
must
have a
minimum
22,500 psi burst rating. 8,000 psi operating pres-
sure flex lances
must
have a
minimum
18,000 psi burst rating.
3. Do not
use a flex lance that has an unknown burst or unknown
manufacturer’s operating pressure rating.
4. Never use a lance which is kinked, worn, frayed
or whose abilities
to hold pressure is questionable.
