Description
Products
ZY*4M Series Self-pressure control valve is a do not rely on
external power to maintain the constant pressure of the control
system balancing valves of the hydraulic condition, the sub-water
supply (G) and the return type (H) two, with in the urban heating
(air conditioning), water systems, maintaining the controlled
system (a district, a building, a single unit, a user, a device
......) differential pressure setpoint,especially the
self-regulating, compartment temperature control, variable flow
rate of household metering system.
Features
Dual valve structure of the valve stem unbalanced force is small,
compact structure, used for heating water systems (air
conditioning), a constant differential pressure of the controlled
system, and has the following features:
1, charged with a constant system pressure;
2, support charged within the system self-regulating; rule out the
differential pressure fluctuations in the external network
controlled system;
3, the use of advanced technology diaphragm, the theoretical error
is zero, and can withstand 0.8MPa pressure differential;
4, the use of advanced stepless voltage regulation structure,
adjustable control differential pressure ratio up to *5:1;
5, when the controlled system internal self-adjustment, the valve
that has the function of self-operated flow control valve, set the
method of flow;
a, adjust the size of the differential pressure control;
b, regulating the size of the controlled system resistance;
6, with the elimination of blocking the function when the control
differential pressure maximum, the valve is fully open state, plug
in the dual-valve at the dirt in the media under the pressure of
clean, the method will guide pipe side of the ball valve closed for
three *5 minutes.
7, differential pressure control accuracy of ± 5;
Technical
parameters
A nominal pressure of 1.6MPa (2.5 MPa scheduled);
2, medium temperature 0 ~ **0 ° C;
3, the working pressure range 0.*4 to 0.4 MPa;
4, the length of the structure in line with the preferred size
GB/T****1 the length of the structure of the "cut-off valve and
check valve.
5, flange dimensions conform to the GB***6.2 in gray cast iron
flange dimensions.
