... FM and UL approved 1. Type: Grooved Elbow, tee, cross, reducer, cap, grooved coupling, mechanical tee, mechanical cross, flange adaptor ... &2.5MPA or 300PSI - 750PSI 5. Connect type: Grooved-thread end & grooved end 6. Size: 1"-16" 7. Finish: Paint, ... C 11. Applications range: 1) Automatic sprinkler system for fire protection on commercial, civil and municipal constructions like water supplying, gas ...