VERDER VERDERAIR VA 25 Manual page 27

Diaphragms (continued)
Air Valve and
Pump Size
Center Section
and Material
VA25A A01A
Two-Piece Diaphragms
Kits include:
• 8 o-rings, PTFE (12)
• 2 diaphragms, PTFE (15)
• 2 backup diaphragms, EPDM (305)
• 2 o-rings for the bolt (301, used only on metal
pumps)
• 1 diaphragm install tool (302)
Diaphragm Material
PT PTFE and EPDM
104
14
(Plastic pumps)
302
(not to scale)
Fluid Covers
and Manifolds
A2
Kit
859.0006
305
15
13
(Metal
pumps)
13
ti14021a
Check
Seats Balls
XX
AL BN
Air and Fluid Plates
Kits for aluminum and stainless steel pumps include:
• air side diaphragm plate (14)
• fluid side diaphragm plate (13)
• o-ring (301)
• bolt (304)
Kits for polypropylene, conductive polypropylene,
and PVDF pumps include:
• air side diaphragm plate (14)
• fluid side diaphragm plate (13, includes bolt)
Pump Material
Aluminum
Conductive Polypropylene 859.0056
Polypropylene
PVDF
Stainless Steel
301
304
Diaphragm Shaft Bolt (Metal Pumps)
Kit 859.0085 includes:
• 8 bolts, stainless steel, M12 x 35 (304)
• 8 o-rings (301)
Manifold
O-Rings
PT
Air and Fluid Plate Kit
859.0055
859.0056
859.0057
859.0082
859.0089 27