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Reducing valve for steam Yoshitake GP-1000HEN

Reducing valve for steam Yoshitake GP1000HEN
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  • Manufacturer: Yoshitake (Japan)
  • Material: stainless steel, ductile iron
  • Action type: pilot operated
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  • Specifications
  • Description
  • Dimensions and weight
  • Chart
  • Delivery and payment
ModelGP-1000HEN
ApplySteam
Inlet pressure0.1-1.6 MPa
Reduced Pressure(A) 0.05-0.9 MPa (B) 0.9-1.4 MPa
No more than 90% inlet pressure (overpressure)
Min. differential pressure0.05 MPa
Max. coefficient pressure reduction20:1
Max temperature220 °C
Valve seat leaksNo more than 0.01% of nominal flow
MaterialBodyDuctile iron
Head. valve, valve seatStainless steel
Pilot valve, pilot valve seatStainless steel
Plunger, cylinderStainless steel
MembraStainless steel
ConnectionFlange connection EN PN25

* Comes with JIS Rc(GP-1010H) threaded connection

Valve with "pilot" plunger type control for universal use.  High reliability with long experience.

  1. It is easy to replace the old valve with the GP-1000HEN valve, as its mounting dimensions comply with European standards.
  2. Immediately responds to fluctuations in inlet pressure and changes in flow, maintaining the reduced pressure at a constant level.
  3. Easy pressure adjustment and wide pressure response range
  4. Complies with Japanese Society of Heating, Air Conditioning and Sanitary Engineers SHASE-S106 Pressure Reducing Valve Standard.
Nominal sizesLHH1Weight
GP-1000HENGP-1000HENGP-1000HENGP-1000H
15A150150 (-)291648.08.0 (-)
20A150155 (-)291648.58.5 (-)
25A160160 (160)3006710.010.0 (10.0)
32A180190 (180)3338214.014.0 (14.0)
40A200190 (220)3338215.514.5 (15.5)
50A230220 (230)3539321.020.0 (21.0)
65A290245 (278)35710030.030.0 (30.0)
80A310290 (310)40412237.035.0 (37.0)
100A350330 (350)45014457.052.5 (57.0)

* Dimensions in parentheses are ASME Class 300 flanged models.

Dimensions of Yoshitake GP-1000HEN, 1000H

Technical selection chart

Reducing valve for steam Yoshitake GP-1000HEN

Find the point where the inlet and negative pressures intersect. If the crossover point is within the range (A) on the graph, then the pressure is controlled by one pressure reducing valve. If the crossover point is within the range (B), the pressure can be adjusted by reducing the pressure in two steps.

The valve does not operate in this range (C).

Pressure curve

Reducing valve for steam Yoshitake GP-1000HEN

This graph shows the underpressure change when the valve inlet pressure of 1.0MPa starts fluctuating between 0.3MPa and 1.6MPa while the underpressure settles to 0.1MPa.< /p>

Flow curve

Reducing valve for steam Yoshitake GP-1000HEN

  • Pressure boost shutdown: 0.02 MPa max
  • Back pressure: no more than 0.03 MPa (with a set pressure of 0.05 MPa to 0.1 MPa) no more than 0.05 MPa (with a set pressure of more than 0.1 MPa

Table of adjusted Su values

* Table of nominal values Cy (with correction factor C = 1)

Nominal Size15A20A25A32A40A50A65A80A100 A
Values Su12,346.5916253664

Note. When the reduced pressure is in any of the ranges below, calculate the corrected value Cy by multiplying the nominal value Cy by the correction factor C as shown in figure 1.

  • When the inlet pressure is between 0.7MPa and 1.0MPa and the pressure reduction ratio is more than 10:1
  • When the inlet pressure is over 1.0MPa and the reduced pressure is 0.4MPa or less.

 Fig. 1. Adjusted value Su

Reducing valve for steam Yoshitake GP-1000HEN

Nominal size selection chart (for steam)

Reducing valve for steam Yoshitake GP-1000HEN

Example 1

When selecting the pressure reducing valve nominal size at inlet pressure (P1), reduced pressure (P2) and steam flow rate of 0.6 MPa, 0.4 MPa and 800 kg/h respectively, first find the point of intersection (a) of the lines inlet pressure 0.6 MPa and reduced pressure 0.4 MPa. From this point, draw a line down to the intersection with the line corresponding to the flow rate of 800 kg / h — intersection point (B). Since the point of intersection (B) lies between the nominal dimensions 40A and 50A, select the larger — 50A.

Example 2

When selecting the pressure reducing valve nominal size at inlet pressure (P1), reduced pressure (P2) and steam flow rate of 0.8 MPa, 0.05 MPa and 600 kg/h respectively, first find the intersection point (C) of the lines inlet pressure 0.8 MPa and diagonal. From this diagonal line, draw a line to the left until it intersects (D) with the line corresponding to a reduced pressure of 0.05 MPa. From this point (D) draw a line downward until it intersects with the line corresponding to a flow rate of 600 kg/h — intersection point (E). Since the point of intersection (E) lies between sizes 32A and 40A, choose a larger — 40A.

*The margin factor should be taken equal to 80-90%.

Delivery

  • Pickup from a warehouse in Kiev - is free
  • New Mail - at the rates of the delivery service, at the rates of the delivery service, at the rates of the delivery service
  • SAT - at the rates of the delivery service
  • Deliveri - at the rates of the delivery service

Payment

  • Cashless payment with VAT
  • Online Privat24, Visa / MasterCard
Reducing valve for steam Yoshitake GP1000HEN

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