Piping Connections; Piping Fit-Up; Relief Valves - Quincy QSF Series Instruction Manual

Section III – Installation

Piping Connections

Never join pipes or fittings by soldering. Lead-tin solders have low strength, a low creep limit, and may,
depending on the alloy, start melting at 360
and should not be confused with lead-tin soldering. Never use plastic, PVC, ABS pipe or rubber hose in
a compressed air system.
Piping Fit -up
Care must be taken to avoid assembling the piping in a strain with the compressor. Piping should line
up without having to be sprung or twisted into position. Adequate expansion loops or bends should be
installed to prevent undue stress at the compressor resulting from the changes between hot and cold
conditions. Pipe supports should be mounted independently of the compressor and anchored, as
necessary, to limit vibration and prevent expansion strains. In no case should the piping be of smaller
size than the connection on the compressor unit.

Relief Valves

Pressure relief valves are sized to protect the system. Never change the pressure setting or tamper with
the valve. Only the relief valve manufacturer or an approved representative is qualified to make such a
change.
Relief valves are to protect system integrity in accordance with ANSI/ASME
B19 safety standards. Failure to provide properly sized relief valves will
result in death or serious injury.
Relief valves are to be placed ahead of any potential blockage point, which includes, but is not limited
to, such components as shut-off valves, heat exchangers and discharge silencers. Ideally, the relief valve
should be threaded directly into the pressure point it is sensing, not connected with tubing or pipe and
pointed away from any personnel. Always direct discharge from relief valves to a safe area away from
personnel.
12
o
F. Silver soldering and hard soldering are forms of brazing
! DANGER !
Relief Valve
Quincy Compressor – QSF Series