User Manual -
Cyclone Silent -
1-2018 edition
PARAMINA SA – Byway Evaggelistrias str. 19300 Aspropirgos, Greece, Tel: 0030 210 5575860-1
Fax: 0030 210 5575868, email:
- website:
www.paramina-compressors.com
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6.8
Tightening Torque Values
The tables’ shows torques values for screw, bolts and fitting in general, please observe the PARAMINA ‘Assembly
Methodology’ for the parts with the specific tightening torque, the parts with special tightening torque is marked
with the proper value in PARAMINA ‘Assembly Methodology’.
Damaged or dirty male or female treads can be destroy or cracking the parts.
Screw and bolts tightening torque values.
Tread
Maximum torque Nm
M6
10
M8
25
M10
46
M12
77
M14
113
BSPP fittings torque values.
Tread
Maximum torque Nm
1/8
9
1/4
35
3/8
45
1/2
65
Tapered Thread Port Assembly
The proper method of assembling tapered threaded connectors is to assemble them fingered tight and then
wrench tighten further to the specified number of turns from fingered tight (T.F.F.T.) given in Table.
Apply sealant/lubricant to male pipe threads, If PTFE tape is used it should be wrapped 1-1/2 to 2 turns in clockwise
direction when viewed from the pipe thread end.
Caution: big amount of tape may cause distortion or cracking of the port.
The total number of tapered threads engaged should be between 3-1/2 and 6.
BSPT
NPTF
T.F.F.T.
1/8-28
1/8-27
2 - 3
1/4-19
1/4-18
2 - 3
3/8-19
3/8-18
2 - 3
1/2-14
1/2-14
2 - 3
Pipe connections (swivel nuts) should be fingered tight (T.F.F.T.) plus an additional ½-1 turn.
Note: A second wrench may be required to prevent the fitting from moving during assembly.
General:
Always use new sealing ring – washer in reassembling works.
Dirty male or female treads can destroy or crack the parts.
Sealant/Lubricants assist in sealing and provide lubrication during assembly, reducing the potential for
galling. Pipe thread sealants are available in various forms such as dry pre-applied, tape, paste and
anaerobic liquid.
We recommend observing the instructions for each block ‘Assembly Methodology’.
