16
PI-120
March 2020
Section 4: Setup
4.0 CONNECTING TORNADO GUN
4.1 Use only 40,000 psi rated fittings and hose for connecting the gun.
They should have a minimum burst rating of 100,000 psi.
4.2 Use of a 6’ safety whip hose is recommended. Safety whip hoses can
be replaced frequently for high operator safety.
4.3 Before tightening up cone and seat type connections, first clean and
inspect, apply antiseize compound to all threads, cone, and seat areas for
protection against galling.
A multi-mode control valve must be used with each gun
when 2 or more waterblast operators are connected to a single waterblast
unit. Each waterblast operator must have independent control of nozzle
pressure at their location.
4.4 Before installing the blast nozzle, check the nozzle size to make sure
its orifice(s) is not too small in order to prevent overpressurization when
the waterblast system is pressurized.
4.5 For operator safety, all high pressure hose sections connected to the
gun and Remote Control Valve should be in good condition and free of
leaks, kinks, and cover damage. The hose support burst shield must be
installed.
4.6 Always purge the hose string between the pump and the gun of dirt
and debris by pumping water through the hose with the waterblast pump
prior to connecting the hose to the gun.
Do not shorten gun barrels or use a Tornado Gun with a
working distance (primary air motor trigger to nozzle tip) of less than 40”.
Severe injury or death may result.