Suction strainers, figure 5, are designed for high capacity spraying. Hose and Fittings Hoses convey the liquid through the sprayer. A good hose is flexible, durable and resistant to sunlight, oil, chemicals, and general abuse such as twisting and vibration. The hose must resist the chemical action of spray chemicals. The outer coating of the hose should also resist chemical action because spray may occasionally contact it.
Liquid pressure varies at different points on the sprayer.
Select hoses strong enough to handle the chemicals at the required pressure. Also consider hose construction, composition, and size. Choose hoses rated for higher capacity than the expected operating pressure to provide a margin of safety and to avoid bursting from pressure surges. Peak pressures much higher than average operating pressures are common. These peak pressures usually occur when the spray boom is shut off.