Pressure reducing valve - With Pulse line for liquids & gases - REAC20L | Miyawaki

Name: Pressure reducing valve - With Pulse line for liquids & gases - REA...
Brand: Miyawaki
SKU: Pressure reducing valve - With Pulse line for liquids & gases - REAC20L | Miyawaki

Miyawaki REAC20L Pressure Reducing Valve with Pulse Line for Liquids and Gases

The Miyawaki REAC20L is a direct-acting pressure reducing valve with external pressure sensing on the secondary side. Downstream pressure is detected in a control chamber, and the valve opening is mechanically adjusted without an electric or pneumatic actuator. It is designed for compressible media such as air and gases, as well as incompressible media like water, oil, and neutral liquids.

Technical Data

DN15–DN200.
Flanged connection DIN.
Body made of stainless cast steel GX5CrNiMo19-11-2 / 1.4408.
Body class PN40.
PMA 4.0 MPa, TMA 400°C.
PMO 4.0 MPa, TMO 400°C.
Kvs 8.0–483 m³/h, per DN.
Maximum pressure reduction ratio: 25:1.

Adjustment Ranges

Typical downstream pressure ranges are 0.05–0.1 / 0.1–0.16 / 0.16–0.25 / 0.25–0.4 / 0.4–0.63 / 0.63–1.0 MPa. Ranges below 0.05 MPa or above 1.0 MPa are considered upon technical selection. Spring selection is made according to DN and required set point.

Applications

Suitable for compressed air networks, industrial water, oil circuits, neutral gases, auxiliary process networks, cleaning systems, and food/beverage equipment where downstream pressure regulation with remote pulse sensing is required. The stainless steel construction makes it suitable for corrosive installation environments or compatibility with cleaner industrial circuits.

Selection and Installation

Sizing requires p1, p2, flow rate, density/viscosity for liquids, temperature, pipe DN, Kvs, and allowable reduction ratio. For ratios greater than 25:1, a two-stage reduction is considered. A manometer option is available on the body, and the series supports horizontal or vertical installation, bypass, and automatic venting.

FAQ

Is it used for steam?
For steam, select the corresponding series with a pulse line for steam. The REAC20L is documented for liquids and gases.

When is the pulse line preferred?
When control pressure needs to be sensed at an actual downstream point of use, not immediately at the valve outlet.

Standard (Options)

Connection (Options)

Flanged

Material (Options)

1.4408
Stainless Steel

Pressure Rating (Options)

PN 40

Description

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
	L	H	h
	PN63-100
15	210	315	82	1,8
20	230		66	3,2
25	230		66	5,0
32	260		81	7,9
40	260		83	13,0
50	300	477	100	20,0
65	340	520	113	34,0
80	380	648	140	51,0
100	430	670	154	80,0

Specifications

Body Material

Stainless steel

GX5CｒNiMo19--11-2

(1.4408)

Body design conditions

	PN40
Max. design pressure (MPa) PMA	4,0
Max. design temperature (℃) TMA	400
Max. operating pressure (MPa) PMO	4,0
Max. operating temperature (℃) TMO	400

Pressure - Temperature rating

PN	Temperature℃
	-10･･･+50	100	150	200	250	300	350	400
	Pressure MPa
PN40	4,0	3,7	3,4	3,1	2,9	2,8	2,7	2,6

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.