[SM-206792-A/3]
−
18
−
OPERATION
5
２）
4KA series
４
KA111
When PB no pressurization (See the right figure)
P
→
A
B
→
R2 (R1 port is closed.) A B PB
When PB pressurization
P
→
B
A
→
R1 (R2 port is closed.)
R1 P R2
4KA121
When PA pressurization (See the right figure)
P
→
A
B
→
R2 (R1 port is closed.) PA A B PB
When PB pressurization
P
→
B
A
→
R1 (R2 port is closed.)
Even if air is cut off after pressuri-
zation,it maintaing the changing by
the self
R1 P R2
4KA131, 4KA141, 4KA151
When 4KA131 is PA,PB no pressurization (See the right figure)
P
・
A
・
B
・
R1
・
R2 are closed.
When 4KA141 is PA,PB no pressurization PA A B PB
P (Closed.)
A
→
R1
B
→
R2
When 4KA151 is PA,PB no pre-
ssurization
P
→
A
・
B
R1
・
R2 (Closed) R1 P R2
Refer to the function of 4KA121 concerning the case of PA or PB which is
pressurization
