1. Passed by UL Certificate the demonstration of MIN demolition pressure with 2500psig(17. 5mpa)(UL File No. SA13502). 2. Connection Size 1/ 4'' to 1 1/ 8 with two kinds: ODF OR SAE. 3. SRS are bi- Directional filter driers. 4. Sieve with 50um can keep normal working at the min Pressure. 5. High moisture dissolution and acid removal ability. 6. Low pressure drop when full flowing capacity. 7. Anticorrsive powder painting can suffer 500 hours salty spray test.