Instructions

Inflating & Deflating Rafts
       To properly inflate an NRS raft, open all the valves and work your way around the boat in a clockwise direction, filling each chamber evenly, until it takes shape.  Next go around the boat in a counterclockwise direction bringing each chamber to pressure.  The tubes should be filled to a maximum of 2.5 psi (pounds per square inch).  After the main chambers are inflated, inflate the thwarts until each thwart takes shape.  Then top off until firm (about 2 - 2.5 psi).  If the raft floor is self-bailing, inflate the floor until the pressure relief valve exhausts a small amount of air.  A maximum of 2.5 psi is the recommended inflation pressure for NRS floors.  A properly inflated boat should still "give" just a bit. 
       As air temperature changes, the pressure in the raft chambers should be adjusted.  Changes in the temperature frequently result in raft over inflation. For example, cold morning temperatures reduce the boat pressure.  The boater adds additional air.  Later, as the weather warms up, the raft becomes rock hard.  This often occurs after lunch breaks when the boat is sitting in the hot sun.  You must let some air out because this over pressurization can lead to significant problems. 
       Today's high-quality rafts may take substantially higher pressures than suggested by the manufacturer without showing any short-term effects.  However, over inflation does strain the seams and can cause problems later in the life of the raft.  The greatest danger of over inflation is explosive decompression.  If the over inflated raft strikes a sharp object with enough force to puncture the material, the tube may explode.                       
       To properly deflate an boat, open the valves on the thwarts, floor, and the last chamber that was filled before topping off.  This will take the pressure off of all chambers at once.  Then continue around the boat opening the remaining valves. 

Inflating & Deflating Inflatable Kayaks
       To properly inflate an IK, inflate both main tubes until they take shape.  Then top off until firm, to a maximum of 2.5 psi.  Because of the small tube size slight over inflation of the tubes is acceptable to increase performance.  Then inflate the floor until the pressure relief valve exhausts a small amount of air.  Finally, inflate the thwarts, again to a maximum of 2.5 psi.
       To properly deflate an IK just open all the valves.

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