Miyawaki - Μειωτής πίεσης - REAΗ20L
■Operating principle
Due to the use of a downstream pressure sensing line (pulse line) the valve provides a constant accurate downstream pressure. Carefully selected springs secure a wide range of downstream pressure applications.
In case of zero consumption on the secondary side the valve closes reliably.
This type is designed for use of compressible media, such as air and various gases and for incompressible media such as water, oil and others.
The pressure reducing valve can be delivered with ductile cast iron, cast steel or stainless steel housings.
●All important internal parts are manufactured in stainless steel.
●The valve is designed for dead-end services.
●Soft sealing or metal sealing valves/seats
Depending on the medium, the valve can be equipped with soft sealing or metal sealing valves/seats.
As option, the valves can be equipped with pressure gauges.
- Max. Operating Pressure
- 10,0MPa
- Max. Operating Temperature
- 400℃
Features
Pressure reducing valves for liquids and gases
The model REA20 is a direct acting pressure reducinf valve designed for use of compressible media, such as air and various gasses and for incompressible media such as water, oil and others.
Due to carefully selected springs a wide range of pressure applications is available.
As option the valve can be equipped with a pressure gauge on the valve body.
Operating features of direct acting pressure reducing valves
Pressure changes on the secondary side are detected in the detection chamber, and the degree of opening of the valve is directly adjusted to keep the pressure on the secondary side at a set level.
Maximum pressure reduction ratio 25:1
Uses
Perfect for cleaning devices, foodstuff devices, and other forms of compact steam equipment.
Dimensions/Weight
Size (DN) | Dimensions (mm) | Kvs Value | Weight (kg) | |||
| L | H | h | ||||
| PN40 | PN63-100 | |||||
| 15 | 130 | 210 | 315 | 82 | 1,8 | 14,5 |
| 20 | 150 | 230 | 66 | 3,2 | 14,5 | |
| 25 | 160 | 230 | 66 | 5,0 | 16,5 | |
| 32 | 180 | 260 | 81 | 7,9 | 18,5 | |
| 40 | 200 | 260 | 83 | 13,0 | 22,0 | |
| 50 | 230 | 300 | 477 | 100 | 20,0 | 37,5 |
| 65 | 290 | 340 | 520 | 113 | 34,0 | 49,0 |
| 80 | 310 | 380 | 648 | 140 | 51,0 | 65,0 |
| 100 | 350 | 430 | 670 | 154 | 80,0 | 91,0 |
| 125 | 400 | 660 | 210 | 130,0 | 125,0 | |
| 150 | 480 | 680 | 235 | 180,0 | 160,0 | |
| 200 | 600 | 740 | 285 | 320,0 | 300,0 | |
Specifications
Body Material
Cast steel
GP240GH
(GS-C25,1.0619)
Body design conditions
| PN40 | PN63 | PN100 | |
| Max. design pressure (MPa) PMA | 4,0 | 6,3 | 10,0 |
| Max. design temperature (℃) TMA | 400 | 400 | 400 |
| Max. operating pressure (MPa) PMO | 4,0 | 6,3 | 10,0 |
| Max. operating temperature (℃) TMO | 400 | 400 | 400 |
Pressure - Temperature rating
| PN | Temperature ℃ | ||||||||||
| -10･･･+50 | 100 | 150 | 200 | 250 | 300 | 350 | 400 | ||||
| Pressure MPa | |||||||||||
| PN40 | 4,0 | 3,7 | 3,5 | 3,1 | 2,8 | 2,6 | 2,4 | 2,3 | |||
| PN63 | 6,3 | 5,9 | 5,5 | 4,9 | 4,5 | 4,1 | 3,8 | 3,6 | |||
| PN100 | 10,0 | 9,3 | 8,7 | 7,8 | 7,1 | 6,4 | 6,0 | 5,8 | |||
Secondary pressure ranges
Secondary pressure range | DN15-DN40 | DN50 | DN65 | DN80 | DN100 | DN125-DN200 |
| MPa | Spring number per size | |||||
| 0,05-0,1 | 9 | 28 | 27 | 38 | 37 | On request |
| 0,1-0,16 | 8 | 27 | 26 | 37 | 36 | |
| 0,16-0,25 | 7 | 26 | 25 | 36 | 35 | |
| 0,25-0,4 | 6 | 25 | 24 | 35 | 34 | |
| 0,4-0,63 | 5 | 24 | 23 | 34 | 33 | |
| 0,63-1,0 | 4 | 23 | 22 | 33 | 32 | |
| 1,0-1,6 | 3 | 22 | 21 | 32 | 32 | |
Secondary pressure ranges higher than 1,6 MPa and lower than 0,05 MPa on request available.
Capacity Chart
