Yoshitake GP-1000T series pressure reducing valves for air and non-corrosive gases are pilot-operated valves designed for small to large flow rates. They are highly reliable for applications ranging from building utilities systems, air-conditioning systems, to factory air lines. The series includes the GP-1000T (flanged) and GP-1010T (screwed) spring types, as well as the GP-1200T and GP-1210T air-loaded types, ensuring zero valve seat leakage with an improved internal structure.

Features

1. Far superior to conventional pressure reducing valves in workability and durability.
2. Free of valve seat leakage. Improved workability as a result of refinement of sliding parts.
3. Simple and robust internal structure.

Specifications

Model	GP-1000T	GP-1010T	GP-1200T	GP-1210T
Application	Air, Other non-dangerous fluids	Air, Other non-dangerous fluids	Air, Other non-dangerous fluids	Air, Other non-dangerous fluids
Control type	Spring type	Spring type	Air-loaded type	Air-loaded type
Inlet pressure	0.1-1.0 MPa	0.1-1.0 MPa	0.1-1.0 MPa	0.1-1.0 MPa
Reduced pressure	0.05-0.9 MPa	0.05-0.9 MPa	0.05-0.9 MPa	0.05-0.9 MPa
Min. differential pressure	0.05 MPa	0.05 MPa	0.05 MPa	0.05 MPa
Max. pressure reduction ratio	20:1	20:1	20:1	20:1
Application temperature	5-80°C	5-80°C	5-80°C	5-80°C
Valve seat leakage	None	None	None	None
Body Material	Ductile cast iron	Ductile cast iron	Ductile cast iron	Ductile cast iron
Connection	JIS 10K FF flanged	JIS Rc screwed	JIS 10K FF flanged	JIS Rc screwed

Materials Note

Available with stainless steel made trim parts (piston, cylinder, and valve) as the GP-TS series. All-stainless steel options include the GP-1000TSS (wetted parts) and GP-1000TAS (all stainless steel).

Dimensions and Weights

GP-1000T & GP-1200T (Flanged)

Nominal size	L (mm)	H1 (mm)	H (mm)	Weight (kg)
15A	150	64	285 (220)	8.0
20A	155	64	285 (220)	8.5
25A	160	67	300 (235)	10.0
32A	190	82	323 (258)	14.0
40A	190	82	323 (258)	14.5
50A	220	93	347 (282)	20.0

The values in parentheses for H are the dimensions of the GP-1200T.

Operation

The pressure reducing valve reduces pressure by throttling the main valve. Inlet pressure passes through the strainer via the inlet pressure passage to apply pressure to the downside of the pilot valve. Turning the adjusting screw clockwise compresses the spring, flexing the diaphragm to open the pilot valve. Inlet pressure then enters the upside of the piston, overriding the pressure on the downside of the main valve and opening the main valve to allow fluid flow. Reduced pressure is led to the diaphragm chamber, balancing with the adjusting spring load to control pilot valve travel, thereby regulating appropriate reduced pressure.

Specification Selection Chart

Find the intersection point of the inlet and reduced pressures. The GP-1000T series valves are suitable within range (A). When within range (B), maximum performance cannot be obtained.