Yoshitake GD-200H is a direct and pilot type pressure reducing valve designed for cold and hot water, oil (kerosene, heavy oils A and B), air, and other non-dangerous fluids. It supports an inlet pressure of up to 2.0 MPa and provides stable secondary pressure control through its reliable pressure balance structure.

Features

• Pressure balance structure can keep the reduced pressure at a constant level without being affected by inlet pressure.
• Highly wear-resistance and durability of stainless steel made valve seat.
• Maintenance and inspection can be conducted easily by disassembling simply from the upper side.
• A rubber disc prevents leakage when the valve is closed.
• Horizontal or vertical installation is possible. (For above 80A, horizontal piping with upward posture.)

Specifications

Specification	Value
Application	Cold and hot water, Oil (kerosene, heavy oils A and B), Air, Other non-dangerous fluids
Inlet pressure	2.0 MPa or less
Reduced pressure	15A-50A: (A) 0.05-0.25 MPa, (B) 0.26-0.7 MPa, (C) 0.5-1.0 MPa 65A-80A: (A) 0.05-0.25 MPa, (B) 0.26-0.7 MPa, (C) 0.5-0.9 MPa 100A-150A: (A) 0.05-0.25 MPa, (B) 0.26-0.5 MPa, (C) 0.5-0.75 MPa
Minimum differential pressure	0.05 MPa
Maximum pressure reduction ratio	10:1
Minimum adjustable flow rate	Water: 5 L/min Air: 10 m³/h (standard condition)
Application temperature	5-80°C
Fluid viscosity	600 cSt or less
Body material	Ductile cast iron
Valve seat material	Stainless steel
Valve disc & Diaphragm material	NBR
Connection	JIS 20K RF flanged

INFO

• The rubber material FKM type is also available (excluding GD-200H 65A to 150A).
• Available with pressure gauge (JIS Rc1/4). JIS Rc3/8 is also available upon request.

WARNING

Use on a compressed air system with dry air from oil-free compressors may cause deterioration of rubber parts in a very short time (ozone crack). Please consult with us before such installation.

Flow and Pressure Characteristics

Nominal Sizes Selection

Dimensions and Weights

Nominal size	L (mm)	H (mm)	H1 (mm)	Weight (kg)
15A	145	310	57	8.2
20A	150	310	57	8.2
25A	150	333	67	10.0
32A	195	397	76	17.3
40A	195	397	76	17.3
50A	195	415	81	19.2
65A	270	555	110	40.0
80A	270	582	125	43.7
100A	308	645	143	70.7
125A	384	849	179	145.0
150A	404	918	204	175.0