Le valvole a pedale sono installate all'estremità inferiore del tubo di aspirazione e includono peso

DDA 17-7 AR-PV/V/C-F-31I004BG The SMART Digital DDA is a compact positive displacement

mechanical shaft seal

DDA 200-4 AR-PVC/E/C-F-31A7A7B The SMART Digital DDA is a compact positive displacement

direct attached to motor:

sp 30 13 13a01013 Le valvole a pedale sonoSubmersible borehole pump, suitable for pumping clean water. Can be installed vertically or horizontally. All steel components are made in stainless steel, EN 1. 4301 (AISI 304), that ensures high corrosive resistance. This pump carries drinking water approval. The pump is fitted with a 11 kW MS6000 motor with sand shield, mechanical shaft seal, water lubricated journal bearings and a volume compensating diaphragm. The motor is a canned type