• Air Velocity

Improvements in fan and plenum design have resulted in uniform air flow from tube-to-tube. Special hose routings (highest velocity tubes connected to longest air runs) are no longer required due to uniform air delivery. While special routings are no longer necessary, the systematic approach to air run identification is still a good practice to follow as it makes run identification and troubleshooting easier.

• Primary Hoses

Primary hoses need not be the same length.

Avoid sharp bends, corners and kinks when routing hoses. Hoses should be routed level or down to avoid having air and product flow move in an upward direction.

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• Secondary Hoses

From a given header ring, maximum allowable difference between longest and shortest hose should be no more than 1219 mm (4 ft).

Should hose length difference exceed allowable maximum, route hoses using equalized method described.

1. Route longest hose from header ring to farthest opener/seed boot.

2. Use "spiral hose" routing to keep hose lengths within allowable difference 1219 mm (4 ft).

Hoses should gently slope down to openers in an "umbrella" fashion.

Avoid sharp bends.

Hoses should be routed level and/or down. Avoid rises after dips.

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