The use of lubricant on bolts will adversely affect clamp performance.
Manufacturer Torque values for clamps are based on dry bolts.
Note: Using the wrong size clamp or installing a clamp with a hose having an OD (Outside Diameter) that is outside its "MIN/MAX" range can result in damage to property and serious injury to personnel.
1. Determine the hose ID (Inside Diameter)
2. Measure the hose "free" OD with a Trumbull diameter tape. "Free" OD is measured before the stem is inserted.
3. On the Clamp page, use the option filters to locate the Nominal Size (Hose ID) column.
4. Once the Hose ID is selected, select the clamp using the Option filter with a hose OD range that best fits the hose O.D. just measured.
-- For steam hose, select the clamp that has a maximum range as close to the measured hose OD as possible. This will allow the clamp to be re-tightened many times to adjust for "cold-flow" which speeds up with increased temperature and/or hot/cold cycles.
-- For hard wall constructed hose (wire present) with an OD at or near the clamp’s maximum range, use of the next largest clamp may be required.
-- For soft wall constructed hose (no wire present) having an OD at or near the clamp’s minimum range, use of the next smallest clamp may be required.
Tip: Make note of the Manufacturer Bolt Torque for the clamp selected as that will be needed for proper assembly.