Annovi Reverberi AR403 diaphragm pump 
Honda GX160 4.8 hp
GR40 control valve
Performance:
40 bar (580 psi)
40 lpm (10.6 gpm) 

Annovi Reverberi AR403 diaphragm pump
550 rpm
3.6 hp requirement
Performance:
40 lpm (10.6 gpm)
40 bar (580 psi)
Features:
3 diaphragms
60 degrees C max temperature
Self-priming
OK to run dry
Materials:
Anodized aluminium body
BlueFlex long life diaphragms
Pump ports:
1/2 inch BSP(M) outlet port
13 mm (1/2 inch) outlet hose tail
25 mm (1 inch) inlet hose tail
Oil type:
SAE 30 engine oil

Honda GX160 engine
4-stroke
Air cooled  
OHV
163 cc
Performance:
4.8 hp (3.6 kW) @ 3600 rpm
7.6 ft lb (10.3 Nm) @ 2500 rpm
Capacities:
0.58 litre (0.61 US qts) crankcase oil capacity
3.1 litre (3.3 US qts) fuel tank capacity
Engine oil type:
Honda factory approved 10W/30 engine oil