NOVELTY - The block has one or more adjustable hose occlusion unit such as freely rotating hose compression rollers (13) or hose compression shoes adjustably mounted to and within a housing adjacent to and on a same plane as a pulley (11). The occlusion unit is moved in a controlled manner either closer or farther from the pulley, and the occlusion unit is locked. A hose is provided as an integral component of a wave powered reciprocating peristaltic hose pump.    USE - Adjustable hose occluding pulley block for use in a wave powered reciprocating peristaltic hose pump.    ADVANTAGE - The block increases pumping efficiency and effectiveness of the hose, and increases the range of hose types and constructions that are used as components of the block. The width of the occlusion is increased, thus offering the ability to maintain a seal at the point of occlusion if irregularities are present in the hose's thickness, shape, inner wall smoothness or other associated variations, and increasing the pumped fluid pressure. The block functions effectively for longer periods of time without the cleaning and maintenance required as a result of buildup due to biological and non-biological fouling. The rollers are pressed against the wall of the peristaltic hose during setup with enough force to ensure proper occlusion and to adjust and hold that force as needed during the setup. The block reduces or eliminates premature failure of the hose due to uneven length of inner and outer walls as they bend about the pulley. The block and hose assembly are easily replaced. The block more timely and more fully re-opens the peristaltic hose following occlusion, maintains occlusion in spite of changes and variation in wall thickness of the peristaltic hose, whether due to a pre-existing condition as a result of changes due to gradual fouling and sediment buildup on the surface of the peristaltic hose, and prevents damage due to sudden pressure spikes or surges that occur as a result of rapidly rising waves during storms.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for an adaptor kit for converting pulley blocks to hose-occluding pulley blocks for use in wave powered peristaltic hose pumps.    DESCRIPTION OF DRAWING(S) - The drawing shows a side view of a hose occluding pulley block in a wave powered reciprocating hose peristaltic pump.    Floats (3)    Water surface (5)    Pulley (11)    Freely rotating hose compression rollers (13)    Backside section (18)