Hypertherm HyPrecision 15, Operator'S Manual

Page: 174 / 194

174 HyPrecision15/30/50 Operator Manual 808240
8 – Pump specifications
Pump specificati
ons
Hydraulic fittings
NPT
This table shows maximum values. The torque necessary to make a sufficient seal depends on the condition of the pipe
threads and could be much lower than the maximum.

For hydraulic fittings, lubricate the O-rings with hydraulic fluid or O-ring lubricant before assembly.

Hypertherm recommends using thread sealant on all NPT hydraulic fittings. When using thread sealant on a male
tapered pipe thread with a female straight or parallel pipe thread, the maximum value is 50% of the standard maximum.
Size
Standard maximum
Maximum torque value when
using thread sealant
(75% of standard maximum)
Maximum torque value when
using a male tapered pipe
thread with a female straight
or parallel pipe thread
(50% of standard maximum)
N∙m lbf ∙ ft N∙m lbf ∙ ft N∙m lbf ∙ ft
1/4 in. 34 25 26 19 18 13
3/8 in. 47 35 35 26 24 18
1/2 in. 61 45 46 34 31 23
3/4 in. 75 55 56 41 38 28
1 in. 88 65 66 49 45 33
1-1/4 in. 108 80 81 60 54 40
1-1/2 in. 129 95 96 71 65 48