DIAD DIRECT INJECTION ANTI-SCALE AND DETERGENT DIAD DIRECT INJECTION ANTI-SCALE AND DETERGENT Excellent results while saving money The direct injection anti-scale and detergent controls guarantee the desired and precise products mixing, by reducing detergent expense, mechanical vibrations and noise related to traditional system. Applied to: PW-H101 PW-H31 PW-H61 Benefits Reduction of detergent expense, mechanical vibrations and noise due to traditional systems. Operator productivity increase. Pump life extension.