Type R1440 valves are self-contained spring operated pressure control regulators, suitable for air, oil, water, gases, steam chemicals and cryogenic applications. The valves are robustly constructed to ensure long and satisfactory service, with renewal parts being readily available.
Basically each valve consists of an actuator topworks fitted to a flanged or screwed globe type valve body containing the plug seat and stem. Actuators vary in size, the smallest (diaphragm) dealing with the highest pressures, and are interchangeable between valve bodies.
All valve plugs are hand lapped to achieve the best possible shut off. For tighter closing, plug assemblies incorporating composition seating can be specified. Differential control valves, where a secondary fluid is piped to the spring chamber and controls flow through the valve at a constant pressure difference, are available throughout the range.
Operation
Following an increased demand for fluid downstream, a drop in outlet pressure will occur. This causes a reduction in force acting against the spring allowing it to push the diaphragm downwards, opening the plug to increase flow, satisfying the demand and restoring set pressure automatically.
Specifications
VALVE SPECIFICATION FOR R1440
BODY SIZES
½”, 3/4″, 1″, 1.½”, 2″
CONTROL PRESSURE
0.005 – 2.0 BarG
END CONNECTIONS
Flanged or screwed to customer’s requirements.
MAX FLANGING
ANSI 600
TEMPERATURE
Metal Seating: refer to flange pressure/temp for body material.
SOFT SEATING
minus 100ºc to plus 200ºc
MATERIALS
Standard – body and spring chamber in cast steel, diaphragm in
st/steel or elastomer and trim in st/steel. Body is also available
in bronze, alum. bronze and st/steel