Polypropylene material is resistant to a range of acidic caustic and chlorine-based chemicals. Locking safety strap prevents accidental pumping; cap protects end of spigot. Spout is long enough to accept a hose and clamp for bottom filling of containers. Pump is vented through connectors and safety cap adapter. Smooth pump action delivers approximately 15 oz per stroke on both up and down stroke for continuous action.