The Arion series strainers are more suited to dirty water applications.
The collected dirt can be flushed directly out to drain by opening the blowdown. The J1521G strainer has a glass collection bowl, while the J1521M strainer has a metal bowl. Standard pressure rating for the strainer is 232 psi / 16 bar. Body connections are 1/2 in / 15 mm NPT and it comes complete with a 3/8 in / 9.5 mm blowdown valve and a discharge tube.