Steel Flange Adapters

Assembly Instructions

Recommended Solid Four-Bolt
  1. Inspect port area to be smooth and free of nicks, burrs, scratches, or contaminants.
  2. Lubricate the o-ring and place in flange head groove.
  3. Lubricate screw threads, slip lock washers onto screws, and insert screws into flange
  4. Position flange on port and finger tighten all screws.
  5. Torque the screws in a figure eight sequence, incrementally until the appropriate torque value in the following table is achieved.


Dash Size
Port Size
Code 61 Foot/Lbs.
Code 62 Foot/Lbs.
-8
1/2"
15-19
15-19
-12
3/4"
20-29
25-33
-16
1"
27-35
41-50
-20
1 1/4"
35-46
62-75
-24
1 1/2"
46-58
116-133
-32
2"
53-67
200-217
-40
2 1/2"
79
NA
-48
3"
137
NA
-56
3 1/2"
116
NA
-64
4"
116
NA
-80
5"
116
NA



Recommended Split Four-Bolt
  1. Follow steps 1 through 3 above, then proceed to the following steps.
  2. Position both flanges on port and turn one screw in each flange about three turns.
  3. Rotate each flange away from the port for sufficient clearance to position hose or fitting flange head on port.
  4. Close each flange until it properly captures flange head. Insert remaining screws and finger tighten
  5. Torque the screws in a figure eight sequence incrementally until the appropriate torque value in the preceeding table is achieved.

Why Wet Torque?

Due to the difference in plating types and thickness, materials, and thread quality of different components, the coefficient of friction varies greatly on any given assembly. Lubrication not only produces a more consistent coefficient of friction, it increases clamping force on sealing area with less torque on the threads. Overtightening causes threads to yield, deform and lose their ability to maintain an adequate load or clamping force on the seating area. Extended operation and severe conditions cause further yielding which results in leaks. Overtightening is the single greatest cause for leaks in metal to metal seat hydraulic connections. It is our firm position, that to not wet torque, is to compromise consistency and quality for convenience.