Caution
1. Refer to “Common Safety Instructions for Fittings” for the safety instructions
for fitting part.
2. Instructions for Installing Controllers
① Use proper tools to tighten a hexagonal-column or a knurling, when installing
the controller.
② Refer to the following table which shows the recommended tightening torque
to tighten thread. Excessive tightening may break the thread part or deform
the gasket to cause a fluid leakage. Tightening thread with the tightening
torque lower than these limits may cause a loosened thread or a fluid leakage.
● Table: Recommended tightening torque
(hexagonal-column)
(knurling)
Thread type
Thread size
Tightening torque
Thread type
Thread size
Tightening torque
Metric thread
M3
×
0.5
0.7N
･
m
Metric thread
M5
×
0.8
1/6 turns
after hand
tightening
M5
×
0.8
1
～
1.5N
･
m
M6
×
1
M6
×
1
2
～
2.7N
･
m
M10
×
1
Taper pipe thread
R1/8
7
～
9N
･
m
Parallel pipe
thread
G3/8
1/2~1 turns after
hand tightening
R1/4
12
～
14N
･
m
G1/2
R3/8
22
～
24N
･
m
R1/2
28
～
30N
･
m
Unified thread
No.10-32UNF
1.5
～
1.9N
･
m
National pipe
thread taper
1/16-28NPT
7
～
9N
･
m
1/8-27NPT
7
～
9N
･
m
1/4-18NPT
12
～
14N
･
m
3/8-18NPT
22
～
24N
･
m
1/2-14NPT
28
～
30N
･
m
Parallel pipe
thread
G3/8
After hand tightening
1/2~1 turns
G1/2
3. Instructions for removing Controller
① When removing controllers, use proper tools to loosen a hexagonal-column or
a knurling.
② Remove the sealant stuck on the mating equipment. The remained sealant
may get into the peripheral equipment and cause malfunctions.
4. Fixed Orifice Joint Series and Speed Controller Constant Flow Series have
deviation of flow rate. Contact us, in case a very accurate amount of flow rate
is required.
5. If PISCO products generate heat by an adiabatic compression, total
temperature including the heat from the product must be controlled within the
range of the specification.