All Piston Type Home » Products » Counterline Products » Water Hammer Arrestors » Piston Type Sort by NewestSort by NameSort by OldestSort by Lowest IDSort by Highest IDSort by SKUDefault Show All Products Acid Neutralization Tanks (16) MI-NEUT Acid Neutralization (16) Specification Drainage (467) Backwater Valves (10) Horizontal Backwater Valves (4) Vertical Backwater Valves (2) Backwater Valves (4) Cleanouts (47) Access Covers (18) Wall Access Cover Cleanouts (13) Floor Access Cover Cleanouts (5) Finished Floor Cleanouts (20) Round Finished Floor Cleanouts (11) Square Finished Floor Cleanouts (4) Non-Adjustable Finished Floor Cleanouts (3) Parts (2) Other Plumbing Cleanouts (9) Drains (283) Floor and Area Drains (125) Finished Floor and Area Drains (58) Round Tops (27) Square Tops (17) Hinged Grates (8) Integral Deep Seal Traps (6) Dome Type (4) Funnel/Indirect Waste Drains (10) Podium | Overflow | Planter (8) Parking Area | Mechanical Room Floor and Area Drains (27) Square Parking 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Load Class A: EN 1433 – 3,372 lbs., 15kN, 70 PSI (7) Load Class B: EN 1433 – 28,100 lbs., 125kN, 580 PSI (2) Load Class C: EN 1433 – 56,200 LBS., 250kN, 1160 PSI (16) Load Class E: EN 1433 – 134,800 LBS., 600kN, 2785 PSI (8) Load Class F: EN 1433 – 202, 320 lbs., 900kN, 4,177 PSI (4) 8″ Internal Width Grates (25) Load Class A: EN 1433 – 3,372 lbs., 15kN, 70 PSI (2) Load Class B: EN 1433 – 28,100 lbs., 125kN, 580 PSI (2) Load Class C: EN 1433 – 56,200 LBS., 250kN, 1160 PSI (11) Load Class E: EN 1433 – 134,800 LBS., 600kN, 2785 PSI (6) Load Class F: EN 1433 – 202, 320 lbs., 900kN, 4,177 PSI (4) 12″ Internal Width Grates (14) Load Class C: EN 1433 – 56,200 LBS., 250kN, 1160 PSI (5) Load Class E: EN 1433 – 134,800 LBS., 600kN, 2785 PSI (6) Load Class F: EN 1433 – 202, 320 lbs., 900kN, 4,177 PSI (3) Hydromax Siphonic Roof Drains (9) Interceptors (94) Acid Neutralization (1) HDPE Interceptors (35) LIL-MAX (10) BIG-MAX (9) SUPER-MAX (16) Grease Interceptors (23) Oil Interceptors (15) 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