These valves
of , which there are two types, are designed to provide the means
sensitively and accuracy to control fuel oil pressures in oil
burning systems.
Both types of valve perform this basic function. The one reacting to pressure
on the outlet side of the valve (Reducing Valve); the other being actuated by
pressure on the inlet side of the valves (Regulating Valve).
Obviously, their application is confined to oil systems - but, primarily, they
were developed for use with oil-fired installations.
These valves are extremely sensitive to the forces of fluid pressure acting upon
them, and instantly respond by compensating adjustment to variations from the
datum pressure for which they are set.
Typical of the applications for which ZWICKY Controlled Pressure Valves have
been developed is this gallery line feeding a number of oil burners.The line
is held at a constant pressure by means of a Controlled Pressure Regulating Valve
at its downstream of each burner in order that the pressure at which oil is fed
to each burner remains constantly at that needed to ensure safe and efficient
operation. The pressure in the gallery line would generally be above that at
which the buners operate. A Controlled Pressure Reducing Valve is also fitted
at the outlet of the Storage Tank so that whatever the level of the oil in the
tank, constant pressure is maintained to the suction side of the pump. There
are many applications for Controlled Pressure Regulating and Reducing Valves
used separately or in conjunction. The Regulating Valve, for example, may be
used in a Pump By-Pass circuit to prevent the pressure downstream of the pump
rising above the datum level.
Type: Zwicky
controlled pressure regulating valve
Material:
Cast Iron, Cast Steel Pressure Class: 150psi (10 bar) Size:
3/8" (10mm); 1/2" (15mm); 3 /4" (20mm)
1" (25mm); 1.1/4" (32mm); 1.1/2" (40mm)
2" (50mm) End Connection:
2"-Flanged; 3/8"-2" male & female BSP connection Temp: max cont. Working Temperature: 170deg.C(388F) Control Range:
3/8"-3/4" 4psi (0.3 bar) to 80psi (5.5 bar)
1"-2" 4psi(0.3 bar) to 60psi (4 bar)
Type: Zwicky
controlled pressure reducing valve
Material:
Cast Iron, Cast Steel Pressure Class: 150psi (10 bar) Size:
3/8" (10mm); 1/2" (15mm); 3 /4" (20mm)
1" (25mm); 1.1/4" (32mm); 1.1/2" (40mm)
2" (50mm) End Connection:
2"-Flanged; 3/4", 1" and 1.1/2" BSP female connection.
Adaptors to male and female BSP connections from 3/8" to 2" can
be supplied. Temp: max cont. working Temperature: 170deg.C(388F) Control Range:
3/8"-3/4" 4psi (0.3 bar) to 80psi (5.5 bar)
1"-2" 4psi(0.3 bar) to 60psi (4 bar)
