NON RETURN VALVE/ REFLUX VALVE/ CHECK VALVE A. SWING TYPE SINGLE DOOR – (NB 50 to 600 mm). B. SWING TYPE MULTIPLE DOOR – (NB 600 to 1200 mm). • Pressure Rating- PN 0.6, 1.0, PN 1.6, PN 20, Cl 150 & Cl 300. • Confirming to IS 5312 (Part 1 & 2). • Flange Drilling as per IS 1538 Table 4 & 6 and other standard. • Reliable, Leak Tightness & Robust Design. • Durable & Long Life. • Low Maintenance. • Quick Slamming and Opening i.e shorter door travel. • Optional- Other Trim Material, Bypass arrangement, Counter Arrangement, Drain plug, Air Release Plug, Mounting Feet, Lifting Lugs, Stopper etc.