Nominal Size Selection Method; Safety Valve Setting Pressure; Characteristics Chart; Specifications Selection Chart - Yoshitake GP-1000 Installation & Operation Manual

5. Nominal Size Selection Method

5.1 Pressure reducing valve specification selection chart

5.2 Safety valve setting pressure

Reduced pressures (MPa)
0.03～0.1
0.1～0.4
0.4～0.6
0.6～0.8
0.8～1.4

5.3 Characteristics chart

(1) Flow rate characteristics chart
Shut-off pressure raise
Setting
pressure
0 5
Min.adjustable flow rate
(2) Pressure characteristics chart
Safety valve setting pressure (MPa)
Reduced pressures＋more than 0.05
Reduced pressures＋more than 0.08
Reduced pressures＋more than 0.1
Reduced pressures＋more than 0.12
Reduced pressures＋15％
50 100 (%)
Flow rate
Rated flow
Find the intersection point of the inlet
and reduced pressures. The GP-1000
series valves are suitable within range
(A), (B), (C), and (D).
・Range（A） ： GP-1000H
・Range（B） ： GP-1000H、
・Range（C） ： GP-1000H、
・Range（D） ： GP-1002（1012）
• Shut-off pressure raise : 0.02 MPa or less
• Offset : 0.03 MPa or less
Offset
(Setting pressure: 0.03~0.1 MPa)
: 0.05 MPa or less
(Setting pressure: 0.1~1.4 MPa)
Reduced pressure is set to 0.1 MPa
when inlet pressure is 1.0 MPa. The
chart indicates a variation in reduced
pressure when the inlet pressure is
changed from 1.6 to 0.3 MPa.
-4-
GP-1000（1010）
GP-1000（1010）、
GP-1002（1012）
■EPDT-081a■