DIG's 3/4ʺ and 1ʺ screen or disc filters mounted on an inline or anti-siphon valve are commonly used in residential and commercial installations to protect low-flow drip systems from sediment and debris that might enter the system and block the drip emitters. The high-quality, large-filtration-area screen and disc filters are corrosion-resistant with excellent mechanical strength, for low maintenance and trouble-free operation.