７ ．Pressure Characteristic Curve; ８ ．Operational Description - Yoshitake GD-46 Series Instruction Manual

７ ．Pressure characteristic curve
８ ．Operational description
№
Before applying fluid, the adjusting spring (14) compressed by the adjusting screw (15)
presses down the diaphragm (7). The Spindle (5) opens valve (2). As water runs from the inlet
through the strainer (19) and the valve top to the outlet side where water also directly applies
pressure to the diaphragm (7). The reduced pressure applied to the diaphragm (7) adjusts the
opening degree of the valve (2) against the force from the adjusting spring (14), keeping the
reduced pressure stable.
This chart shows variation in reduced pressure when the inlet pressure
of 0.5 MPa is changed between 0.22 MPa and 1.0 MPa while the
reduced pressure is set at 0.2 MPa.
⑱
Name of part
1 Body
2 Valve
5 Spindle
7 Diaphragm
10 Domed cap nut
11 Spring cover
14 Adjusting spring
Name of part
№
15 Adjusting screw
17 Cap
18 O-ring
19 Strainer
21 Strainer cap
44 Heat insulating material
－6－
■EPDT-166f■