
FORM 124-EN. 05/16 5/12
We reserve the right to make changes to our products without prior notice.
2.1.1 VALVE
loosen the fittings and remove the pipes (75);
unscrew the screws (62) and remove the pilot from the backflow body (65);
unscrew the screws (109) and remove the backflow preventer from the bonnet (46);
unscrew the screws (48) and remove the bonnet (46) from the valve body (37);
remove the eyebolts (58) from the bonnet (46);
remove the spring (51);
remove the guide (45) along with the disc holder (44), the disc (40) and the ball (42);
separate the disc-holder unit (44), and the gaskets (47) (49) (56) from the guide (45);
loosen the screws (41) and separate the disc (40) and the ball (42) from the disc-holder (44);
unscrew the screws (44c) and remove the flange (44b), the gaskets (43) (44a) from the disc-holder
(44);
remove the plug (37a), the screw and the gasket (52) from the valve body (37);
unscrew the nozzle (35) from the valve body (37);
remove the gasket (36), the fitting (34), the extension and the ejector (32) from the nozzle (35);
remove the gasket from the extension (32).
2.1.2 BACKFLOW PREVENTER
remove the gaskets (11), the seats (66), the gaskets (64), the ball (54) and the bushings (67);
unscrew the plug (68) and remove the gasket (69).
2.1.3 PISTON PILOT TYPES "A" AND "B"
remove the cap (28) and separate the plug (70);
loosen the locknut (26);
rotate the adjustment screw (27) counter-clockwise to fully discharge the spring (23);
remove the bonnet (25) from the lower base (31);
separate the adjusting screw (27) and the locknut (26) from the bonnet (25);
remove the spring guides (72), the spring (23), the spring guide (24) with the stem (60), the spacer
(131) and the gasket (119);
unscrew the stem (60) from the spring guide (24);
remove the lower base (31) from the pilot body (1);
extract from the pilot body (1) the group made up of cylinder (101), guide (105), piston (102), nut
(113), spindle (103), nozzle (100), nut (106), spacer (107), disc (108) and spring (110);
remove the nozzle (98) from the pilot body (1);
unscrew the nut (113) and the piston (102) from the spindle (103) and remove the seals (120)
(129);
separate the cylinder (101) from the guide (105);
separate the guide (105) from the spindle (103) and remove the gaskets (121) (128);
unscrew the nozzle (100) from the spindle (103) and remove the gasket (127);
remove the spring (110);
using milling, unscrew the nut (106) from the disc (108) and remove the gasket (112);
separate the nozzle (100) from the spacer (107);
separate the spacer (107) from the disc (108) and remove the gaskets (122) (126);
pull out the spring (104);
remove the fitting (34a) and the adapter (39) from the pilot body (1);
remove the plug (99) and the gasket (125) from the pilot body (1);
unscrew the nozzle (111) until it pulls loose from the pilot body (1) and remove the gaskets (123)
(124);
remove the filter (61), the cap (118) and the filter net (73).