For ultimate quality and durability the 1.25L Industrial Viton Sprayer is equipped with the Viton fluoroelastomer seals which are 4 x more resistant than generic seals, The Viton Sprayer includes a stainless steel pump rod, a thicker bottle for durability and 4 x more resistance than standard, Plus and Pro domestic sprayers. Max Fill and Pressure To ensure the best usage of your Hozelock Viton Sprayer, fill your sprayer no higher than the line indicated. Using a max of 40 pumps will offer the ideal functionality. Ease of Use The location of the trigger on the Hozelock Viton Sprayer is great for a multitude of usages outdoors and in the home. Spraying those hard to reach places is made easier. Locking Functionality The ability to lock and unlock your Viton Sprayer ensures the liquid within is secure and out of harms way. Simply click "on' or "off" to engage the locking system. Adjustment Nozzle Simply adjust the nozzle on the viton sprayer to suit your needs. Whether you require a spray mist or jet, the Viton Sprayer allows for a range of functions.