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Pilot operated directional valve (2)<br />
■Specifications<br />
Maximum working<br />
pressure<br />
MPa (kgf/cm 2 )<br />
Highest pilot pressure MPa (kgf/cm 2 )<br />
Lowest pilot pressure<br />
MPa (kgf/cm 2 )<br />
Stroke volume<br />
of pilot part<br />
cm 3<br />
Mass kg<br />
Nominal dimension 16 22 32<br />
Port A, B, P<br />
Port T<br />
Opening area at spool neutral position<br />
(with spool <strong>10</strong> as <strong>10</strong>0%)<br />
3 position valve spring center type<br />
3 position valve hydraulic center type<br />
2 position valve spring offset type<br />
2 position valve hydraulic offset type<br />
2 position valve spring offset type<br />
2 position valve hydraulic offset type<br />
3 position valve spring center type<br />
3 position valve<br />
hydraulic center type<br />
Position “o”→“a”<br />
Position “a”→“o”<br />
Position “o”→“b”<br />
Position “b”→“o”<br />
Spool 17, 22<br />
Spool 23<br />
34.3 (350)<br />
24.5 (250)<br />
24.5 (250)<br />
0.78 (8.0)<br />
0.98 (<strong>10</strong>.0)<br />
0.5(5.0)<br />
8.9 19.3 70.7<br />
4.45 9.65 35.35<br />
2.30 5.0 17.25<br />
2.15 4.65 18.1<br />
4.45 9.65 35.35<br />
2.30 4.65<br />
16%<br />
3%<br />
17.25<br />
7.5 13 49<br />
■Maximum flow rate<br />
Maximum flow rate<br />
L/min<br />
2 position valve spring offset type<br />
3 position valve spring center type<br />
Nominal<br />
dimension<br />
Spool type<br />
Working pressure MPa (kgf/cm 2 )<br />
7 (70) 14 (140) 20.6 (2<strong>10</strong>) 27.4 (280) 34.3 (350)<br />
(A)<br />
16<br />
05, <strong>10</strong>, 12, 13, 17, 18, 21<br />
22, 23, 03, 04, 11, 26<br />
06<br />
*<br />
240<br />
200<br />
240<br />
145<br />
205<br />
115<br />
180<br />
<strong>10</strong>0<br />
170<br />
90<br />
07, 08, 19, 20<br />
220<br />
160<br />
130<br />
1<strong>10</strong><br />
<strong>10</strong>0<br />
(A)<br />
22<br />
05, <strong>10</strong>, 12, 13, 17, 18, 21<br />
22, 23, 03, 04, 11, 26<br />
*<br />
450<br />
450<br />
370<br />
320<br />
300<br />
06, 07, 08, 19, 20<br />
360<br />
250<br />
2<strong>10</strong><br />
180<br />
160<br />
(A)<br />
32<br />
05., <strong>10</strong>, 12, 13, 17, 18, 21<br />
22, 23, 03, 04, 11, 26<br />
*<br />
1<strong>10</strong>0<br />
<strong>10</strong>50<br />
860<br />
750<br />
680<br />
06, 07, 08, 19, 20<br />
820<br />
630<br />
5<strong>10</strong><br />
450<br />
400<br />
(Note)<br />
● The above table shows numerical values in the case of the lowest pilot pressure.<br />
● The maximum flow rate in the case of the 2 position valve hydraulic offset type and 3 position valve<br />
hydraulic center type is the flow rate of stage (A) regardless of the spool type, and is the flow rate<br />
marked with * regardless of the spool type and pressure if pilot pressure is 1.5 MPa (15 Kgf/cm 2 ) or<br />
higher.<br />
■Pressure drop characteristics<br />
● Similar to those of solenoid controlled pilot operated directional valve (DEH16, 22, 32)<br />
Refer to the section of the type number index “DEH16, 22, 32”.<br />
1-46
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