Hale Trailer User Manual download pdf (Page 30)

❑ Accessories / Options

Accessories / Options - Skid & Trailer

p/n: 209-0020-101-0

Hale FoamLogix

Foam systems accu-

rately deliver from

0.1% to 10.0% foam

concentrate through

a check valve / injec-

tor fitting, directly into

the water discharge

stream. It is then fed

as foam solution into

a standard fog noz-

zle, an air aspirated

nozzle, or CAFS

equipment, through

the apparatus dis-

charge piping. A

properly configured

and installed foam

system with Hale

recommended com-

ponents virtually eliminates contamination of the booster tank, fire pump

and relief valve with foam concentrate.

2A.6 PRESSURE AND RELIEF VALVE CONTROL

Note: For additional information about the

pressure and relief valves in your system, see

the separate manual provided with the valves.

Also see Section 7, “Drawing Package” on

page 73.

P Series Relief Valve System

The P Series relief valve system is a bronze,

variable-pressure setting, relief valve that

prevents undue pressure per the require-

ments of NFPA Standard 1901. An AMBER

indicator light on the operator control panel

signals when the valve is open. (See Figure

2a-6: “P Series Relief Valve Control.”)

The P series relief valve system includes a

panel mounted control valve (PM) and a

relief valve (P25, P30 or P30V). Also see

Section 7, “Drawing Package” on page 73.

Figure 2a-5: Typical Foam Proportioning System

Figure 2a-6: P Series Relief Valve

Control

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Hale Trailer User Manual Page 30

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