YOSHITAKE GP-1000H Pressure Reducing Valve Steam

Made in Japan
Manufacturer: Yoshitake
Model: GP-1000H

Maximum inlet pressure: 1.6 MPa
Superior durability
Stable performance
Valve leakage meets ANSI Class IV
High reduction ratio (20:1)

Specifications

Features		For steam, Max. 1.6MPa
Type		Pilot operated piston type
Specifications	Product type	Pilot-operated type
	Nominal size	15A (1/2″) – 100A (4″)
	Application	Steam
	End connection	JIS 16K FF flanged, ASME Class 300 flanged
	Inlet pressure	0.1 – 1.6 MPa
	Reduced pressure	0.05 – 1.4 MPa (*)
	Reduced pressure	90% or less of the inlet pressure(gauge pressure)
	Min. differential pressure	0.05 MPa
	Max. pressure reduction ratio	20 : 1
	Working temperature	Max. 220 degree(C)
	Valve seat leakage	0.01% or less of rated flow
Material	Body	Ductile cast iron
	Valve and valve seat	Stainless steel
	Piston, cylinder	Stainless steel
	Diaphragm	Stainless steel

Remarks

* Reduced pressure
A: 0.05-0.9 MPa
B: 0.9-1.4 MPa

Dimensions and Weights (JIS 16K FF flanged)

Size	L (mm)	H (mm)	Weight (kg)	Cv value
15A(1/2)	150	291	8.0	1
20A(3/4)	155	291	8.5	2.3
25A(1)	160	300	10.0	4
32A(1 1/4)	190	333	14.0	6.5
40A(1 1/2)	190	333	14.5	9
50A(2)	220	353	20.0	16
65A(2 1/2)	245	357	30.0	25
80A(3)	290	404	35.0	36
100A(4)	330	450	52.5	64

Dimensions and Weights (ASME Class 300 flanged)

Size	L (mm)	H (mm)	Weight (kg)	Cv value
25A(1)	160	300	10.0	4
32A(1 1/4)	180	333	14.0	6.5
40A(1 1/2)	200	333	15.5	9
50A(2)	230	353	21.0	16
65A(2 1/2)	278	357	30.0	25
80A(3)	310	404	37.0	36
100A(4)	350	450	57.0	64

About flow rate

Please refer to the nominal size selection chart when the inlet pressure is 0.6 MPa or more and the pressure reduction ratio exceeds 10:1.

Selection data：

Find the intersection point of the inlet and reduced pressures. If the intersection point is within range (A) in the chart, the pressures are controllable with a single pressure reducing valve.
They can be controlled by two-stage pressure reduction if the intersection point is within range (B). The valve does not fulfill specified performance in range (C).

[Example 1]

When selecting the nominal size of a pressure reducing valve whose inlet pressure •P ‘), reduced pressure (P2), and steam flow rate are 0.6 MPa. 0.4 MPa, and 800 kg/h, respectively, first find intersection point (A) of the inlet pressure of 0.6 MPa and the reduced pressure of 0.4 MPa. Trace down vertically from this intersection point to find intersection point (B| with the flow rate of 800 kg/h. Since intersection point (B) lies between nominal sizes 40A and 50A. select the larger one. 50A.

[Example 2]

When selecting the nominal sue of a pressure reducing valve whose pressure (P), reduced pressure (Pz), and steam flow rate are 0.8 MPa. 0.05 MPa. and 600 kg/h. respectively, first find intersection point (C) of the inlet pressure of 0.8 MPa and the diagonal line. Trace down to the left from this diagonal to find intersection point (D) with the reduced pressure of 0.05 MPa. Trace down vertically from intersection point (D) to find intersection point (E) with the flow rate of 600 kg/h. Since intersection point (E) lies between nominal sizes 32A and 40A select the larger one. 40A.

Set the safety factor at 80 to 90%.

Japan, Yoshitake