21
12. Drain valve
12.1 Construction
AV500, AV520
•
Male thread G½" on
input side
•
Output side with cutting
ring connection ø12 as per
DIN 2353
– DS12
•
Other drain connections on
request
AV580, AV585
•
Male thread G½" on
input side
•
Output side with cutting
ring connection ø12 as per
DIN 2353
– DS12
•
With limit switch to register
the blow-down process
•
Other drain connections on
request
(1)
Valve housing
(11) Handwheel
(2)
Sealing ring
(12) Plate OPEN-CLOSED
(3)
Seat
(13) Cap nut
(4)
Valve spindle with cone
(14) Drain connection
(5)
Scraper rings
(15) Screw
(6)
Gland packing
(16) Switch housing cover
(7)
Stuffing box
(17) Limit switch
(8)
Screw cap
(18) Fixing screw
(9)
Sealing ring
(19) Counter nut
(10)
Upper part of valve
(20) Adjusting screw
