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FEATURES
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Various applications for construction equipment, various types
of plant equipments and freezing machine field.
1. Because this valve is a pilot direct operated type, it does
not need auxiliary equipment such as an electric and a
compressed air. Its capacity is larger than direct operating
valve.
2. Pressure adjusting range is wide and pressure adjusting range
is easy. (JRV-SF11: 0.35~8kgf/??{0.035 ~ 0.8MPa}. JRV-SF21:
0.35~16kgf/??{0.035~1.6MPa})
3. This valve has a built-in filter and the filter prevents
mal-functions of valve due to the scale and impurities and shows
an excellent performance |
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MATERIAL |
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NO |
PART NAME |
JRV-SF11 |
JRV-SF21 |
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1 |
Body |
CAST IRON |
CAST CARBON STEEL |
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2 |
Top Cover |
CAST IRON |
CAST CARBON STEEL |
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3 |
Main Valve |
STAINLESS STEEL |
STAINLESS STEEL |
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4 |
Main Valve Seat |
STAINLESS STEEL |
STAINLESS STEEL |
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5 |
Piston |
CAST BRONZE |
CAST BRONZE or CAST IRON |
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6 |
Cylinder |
CAST BRONZE |
CAST ST.ST |
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7 |
Pilot Valve |
STAINLESS STEEL |
STAINLESS STEEL |
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8 |
Pilot Valve Seat |
STAINLESS STEEL |
STAINLESS STEEL |
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9 |
Diaphragm |
STAINLESS STEEL |
STAINLESS STEEL |
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10 |
Adjust Screw |
BRASS |
BRASS |
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11 |
Adjust Spring |
CARBON STEEL |
CARBON STEEL |
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12 |
Spring Case |
CAST IRON |
CAST IRON |
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1.INLET PRESSURE |
2~10 kgf/??{0.2~1.0MPa} |
2~20 kgf/??{0.2~2.0MPa} |
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2.OUTLET PRESSURE |
0.35~1.0, 1.0~8.0 kgf/??
{0.035~0.1,0.1~0.8MPa} |
1.0~16.0 kgf/??
{0.1~1.6MPa} |
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3.MAX REDUCING RATIO |
10 : 1 |
10 : 1 |
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4.WORKING TEMP |
Max 220 |
Max 300 |
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5.WORKING FLUID |
S |
S |
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6.CONNECION |
10KFF Flanged |
20KRF Flanged
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Fluid symbol
1. S : Steam
*
NOTE
1. Please adjust the secondary pressure must be less than 80% of
primary pressure
2. Minimum pressure differential across the disc.: 0.7kgf/??
{0.07MPa}
3. Leakage allowance: Less than 0.05% of rated flow
4. Hydrostatic test pressure: JRV-SF11:
15kgf/??{1.5MPa}, JRV-SF21: 30kgf/?? {3.0MPa}
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Dimensions
(Unit: mm)
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MODEL |
PART |
15A |
20A |
25A |
32A |
40A |
50A |
65A |
80A |
100A |
125A |
150A |
200A |
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JRV-SF11 |
L |
165 |
165 |
170 |
185 |
200 |
220 |
250 |
290 |
340 |
390 |
420 |
550 |
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H1 |
75 |
75 |
75 |
85 |
85 |
92 |
110 |
130 |
155 |
180 |
195 |
250 |
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H |
270 |
270 |
270 |
275 |
275 |
283 |
310 |
350 |
370 |
500 |
535 |
615 |
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JRV-SF21 |
L |
200 |
200 |
200 |
225 |
230 |
250 |
280 |
310 |
320 |
350 |
395 |
560 |
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H1 |
83 |
83 |
83 |
108 |
108 |
113 |
123 |
137 |
140 |
148 |
181 |
250 |
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H |
292 |
292 |
292 |
307 |
301 |
325 |
366 |
445 |
445 |
459 |
466 |
620 |
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