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 Click to enlarge image
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 Model Number |
DSR-4 OPCO |
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 General
features |
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Dependable control of widely varying inlet pressure
Smooth, steady outlet pressure and flow
Easy to adjust to each outlet pressure either by spring adjustment
or by interchange of the
-- spring for another pressure range
Designed to meet D.O.T Safety Standards
Easy to install
Interchangeable brass orifice |
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| General
Description |
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The DSR-4 series of regulators
are available in a variety of models to suit the service installation
requirements. Designed for use in distribution systems with pressure
up to 1000kPa and outlet pressure from 1.5kPa to 18kPa.
Capacities to maximum 600㎥/h depending on model, type, connection
size, inlet and outlet pressure. Specially engineered and manufactured
for excellent control of widely varying inlet pressure and fluctuating
flow rates. All models are interchangeable at the throat of the valve
body. Stainless steel vent screen. |
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| Technical
features |
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Design
-- Design Direct-acting pressure regulator with
-- spring control and diaphragm ( Lever type )
Operating
temperature
-- From -20°C to ＋60°C
Acceptable
gases
-- Natural gas, propane, air, nitrogen or any non-
-- corrosive gas
Safety
devices
-- Incorporated relief valve
-- Operating pressure: max 22kPa
-- OPCO(Over Pressure Cut-off)
-- Operating pressure: max 20kPa
connections
-- Inlet, Outlet DN 50(2") Flanged
-- PN16 DIN2527
Pressure
range
-- Inlet pressure Pmax :1000kPa
-- Outlet pressure 5.5kPa to 18kPa
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| Construction materials |
| Description |
Materials |
| BODY |
Die cast aluminium |
| Casing and cast |
Die cast aluminium |
| Internal parts |
Stainless steel and brass |
| Seals |
Nitrile rubber |
| Diaphragm |
Nitrile rubber |
Orifice size
The Series DSR-4 gas pressure regulators
have an orifice of 6.3㎜, 10, 12.5, 20, 23.6㎜. |
| Safety devices |
Version
code |
DSR-4 |
DSR-4(OPCO type) |
Safety
devices |
Internal
Relief valve |
Internal
Relief valve |
| - |
Over pressure
Cut-off |
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| Schematic
Sequence of OPCO (Over Pressure Cut-off) Operation |
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| PRINCIPLE
OF OPERATION |
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The safety Over pressure cut-off valve is a safety
device that operates when the pressure in the downstream pipe increases
beyond the prefixed values, cutting the fluid automatically.
The safety valve consists in a body, a control casing, a diaphragm
assembly and a cut-off stem group which is controlled by a mechanical
ball system.
The safety Over pressure cut-off valve is actuated when in the lower
regulation diaphragm housing, the downstream pressure value, introduced
by the impulse intake from the downstream pipe, increases or decreases
beyond the values preset, thus moving the diaphragm assembly from
a balanced position, triggering the stem and the valve plug : under
the force of the spring, it closes immediately the orifice, cutting
the flow of the fluid automatically.
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| Maximum
Capacities of the Regulator (DSR-4 OPCO type) |
|
Capacity
Data l |
Inlet
Pressure
(kPa) |
Orifice size
|
Ø6.3 ㎜
|
Ø10.0 ㎜
|
Ø12.5 ㎜
|
Ø20.0 ㎜ |
Ø23.6 ㎜ |
|
Pressure
range
1.5 ∼3.4
kPa
Outlet
Pressure
2.0 kPa
Spring NO.
DS-411
SG 20
RG 20
|
14
|
13 |
25 |
28 |
55 |
110 |
20
|
15 |
30 |
35 |
75 |
120 |
30
|
25 |
35 |
40 |
110 |
200 |
40
|
30 |
40 |
50 |
150 |
250 |
70
|
40 |
90 |
150 |
220 |
310 |
| 80 |
45 |
100 |
170 |
260 |
350 |
| 100 |
50 |
130 |
200 |
290 |
400 |
| 200 |
60 |
180 |
320 |
440 |
- |
| 300 |
110 |
240 |
420 |
- |
- |
| 400 |
130 |
280 |
500 |
- |
- |
| 500 |
170 |
320 |
- |
- |
- |
| 600 |
190 |
390 |
- |
- |
- |
| 700 |
210 |
410 |
- |
- |
- |
| 800 |
230 |
430 |
- |
- |
- |
| 990 |
250 |
450 |
- |
- |
- |
| Natural Gas (0.6)
[Unit : N㎥/h] |
|
|
Capacity
Data l |
Inlet
Pressure
(kPa) |
Orifice size
|
Ø6.3 ㎜
|
Ø10.0 ㎜
|
Ø12.5 ㎜
|
Ø20.0 ㎜ |
Ø23.6 ㎜ |
|
Pressure
range
4.0 ∼ 7.8
kPa
Outlet
Pressure
5.0 kPa
Spring NO.
DS-412
SG 20
RG 20
|
14
|
13 |
30 |
30 |
65 |
90 |
20
|
15 |
45 |
45 |
100 |
140 |
30
|
25 |
55 |
55 |
140 |
190 |
40
|
30 |
70 |
70 |
170 |
220 |
70
|
40 |
110 |
150 |
260 |
280 |
| 80 |
45 |
120 |
170 |
280 |
330 |
| 100 |
55 |
150 |
180 |
310 |
360 |
| 200 |
80 |
210 |
320 |
430 |
490 |
| 300 |
110 |
280 |
400 |
490 |
550 |
| 400 |
130 |
360 |
500 |
550 |
- |
| 500 |
170 |
430 |
550 |
- |
- |
| 600 |
200 |
500 |
- |
- |
- |
| 700 |
230 |
530 |
- |
- |
- |
| 800 |
250 |
560 |
- |
- |
- |
| 990 |
280 |
600 |
- |
- |
- |
| Natural Gas (0.6)
[Unit : N㎥/h] |
|
|
Capacity
Data l |
Inlet
Pressure
(kPa) |
Orifice size
|
Ø6.3 ㎜
|
Ø10.0 ㎜
|
Ø12.5 ㎜
|
Ø20.0 ㎜ |
Ø23.6 ㎜ |
|
Pressure
range
5.5 ∼11
kPa
Outlet
Pressure
9.0 kPa
Spring NO.
DS-413
SG 20
RG 20
|
14
|
|
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|
20
|
13 |
35 |
45 |
95 |
125 |
30
|
20 |
50 |
65 |
150 |
170 |
40
|
25 |
70 |
85 |
190 |
200 |
70
|
40 |
100 |
150 |
260 |
270 |
| 80 |
45 |
120 |
170 |
280 |
330 |
| 100 |
55 |
130 |
190 |
300 |
350 |
| 200 |
80 |
210 |
300 |
450 |
490 |
| 300 |
100 |
270 |
390 |
500 |
550 |
| 400 |
120 |
330 |
480 |
600 |
600 |
| 500 |
170 |
420 |
560 |
600 |
- |
| 600 |
200 |
490 |
600 |
- |
- |
| 700 |
220 |
525 |
- |
- |
- |
| 800 |
250 |
560 |
- |
- |
- |
| 990 |
280 |
600 |
- |
- |
- |
| Natural Gas (0.6)
[Unit : N㎥/h] |
|
|
Capacity
Data l |
Inlet
Pressure
(kPa) |
Orifice size
|
Ø6.3 ㎜
|
Ø10.0 ㎜
|
Ø12.5 ㎜
|
Ø20.0 ㎜ |
Ø23.6 ㎜ |
|
Pressure
range
10 ∼ 20
kPa
Outlet
Pressure
15 kPa
Spring NO.
DS-414
SG 20
RG 20
|
14
|
- |
- |
- |
- |
- |
20
|
- |
- |
- |
- |
- |
30
|
20 |
45 |
50 |
130 |
160 |
40
|
25 |
70 |
90 |
140 |
190 |
70
|
35 |
100 |
150 |
230 |
280 |
| 80 |
40 |
120 |
160 |
270 |
310 |
| 100 |
45 |
130 |
190 |
300 |
350 |
| 200 |
70 |
200 |
300 |
470 |
500 |
| 300 |
100 |
260 |
390 |
540 |
560 |
| 400 |
130 |
320 |
460 |
580 |
580 |
| 500 |
160 |
400 |
560 |
600 |
600 |
| 600 |
180 |
470 |
600 |
600 |
- |
| 700 |
220 |
520 |
600 |
600 |
- |
| 800 |
250 |
560 |
600 |
- |
- |
| 990 |
280 |
600 |
600 |
- |
- |
| Natural Gas (0.6)
[Unit : N㎥/h] |
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