Submittal Sheet

Constant Pressure System
ELEC TRICAL DATA
Models DD60-10NPT DD90-11NPT
Voltage 220 – 240V ~
Max motor speed 2,900rpm
Frequency
(incoming power)
50 – 60Hz
Input power P
1
1.1kW 1.3kW
Output power P
2
0.8kW 0.9kW
Running current 7.4A 8.6A
Insulation class F
IP rating 55
MATERIALS OF CONSTRUCTION
PART MATERIAL
Casing 304 stainless steel
Impellers 304 stainless steel
Stages (casing) 304 stainless steel
Pump shaft 316 stainless steel
Stage centring device 304 stainless steel
Mechanical seal Carbon/ceramic
O-rings EPDM
Plugs 316 stainless steel
Motor shell and lantern bracket
Aluminium with baked polyester
powder coat finish
Motor feet Xenoy
Fan cowl/rear foot Polypropylene
Adaptor VSD Polypropylene
5-way tee piece 304 stainless steel
Pump coupling to 5-way tee piece Brass
OPERATING LIMITS
Models DD60-10NPT DD90-11NPT
Max. ow rate
@ 300kPa (43psi)
16 gpm 24 gpm
Max. ow rate
@ 400kPa (58psi)
13 gpm 19 gpm
Max. ow rate
@ 500kPa (73psi)
8 gpm 9 gpm
Max. casing pressure 145 psi
Max. set pressure 87 psi
Min. cut-in pressure
(gauge)
1½ psi
Default cut-in pressure 7psi less than set pressure
Max. cut-in pressure 3psi less than set pressure
Operating water temp
range
32° - 176ºF
Operating ambient/
air temp range
32° - 122ºF
Maximum humidity 95%
Nature of uids
Clean, clear, non-corrosive, non-ammable
liquids with no bers and little sand/silica or
abrasives (maximum concentration 40g/m
3
)
Applicable approvals UL 778; UL61800-5-1; CSA-C22.2 No. 108-14
DIMENSIONS (inches)
18¼
12
23½
4
9¾
5¾
7
10 5
daveywater.com