One-Speed Circulation Pump

This wet-rotor single-speed circulation pump is suitable for both open and closed HVAC systems. It features an integrated pump & motor structure without shaft seal, only two gaskets for sealing, and bearings lubricated by pumped liquid. It can deliver max flow up to 40m³/h and head up to 35m, supporting continuous operation for heating, underfloor heating, solar & air-conditioning circuits. It handles liquid temperature up to 110°C, low noise ≤45dB(A), max working pressure 10 bar, powered by 50Hz two-pole motor with IP42 protection.

Wet rotor integrated design, no shaft seal, low leakage risk & high reliability

Wide application for heating, solar, heat recovery and air conditioning systems

Low noise operation, stable continuous duty with broad temperature & pressure tolerance

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Technical Data Sheet

Model	Power (W)	Q.max (m³/h)	H.max (m)	R.flow (m³/h)	R.head (m)	Unions DN1	Unions DN
FPD25-90/220	300	9.5	9	5	5	1½”	1″
FPD32-90/220	300	9.5	9	5	5	2″	1¼”
FPD25-120/220	500	11.5	12	5	8	1½”	1″
FPD32-120/220	500	11.5	12	5	8	2″	1¼”
FPD25-160/230	700	11.5	16	5	12.5	1½”	1″
FPD25-200/230	1000	12.5	20	5	16	1½”	1″

Model	Power(W)	Q.max(m³/h)	H.max(m)	R.flow(m³/h)	R.head(m)	D1	D2	D3	D4
FPD32-90F/220	300	9.5	9	5	5	32	11.5	90	90
FPD32-120F/220	300	12	12	5	8	32	11.5	90	90

Model	Power(W)	Q.max(m³/h)	H.max(m)	R.flow(m³/h)	R.head(m)	D1	D2	D3	D4	D5	D6	B4
FPD40-45F/250	300	11	4.5	8	3	40	17.5	13.5	110	100	150	62.5
FPD40-60F/250	500	14	6	12.5	4	40	17.5	13.5	110	100	150	62.5
FPD40-120F/250	700	12	12	8	8	40	17.5	13.5	110	100	150	62.5
FPD40-160F/250	1000	14	16	8	12.5	40	17.5	13.5	110	100	150	62.5
FPD50-50F/300	300	15	5	10	3	50	17.5	13.5	125	110	165	75
FPD50-80F/300	500	20	8	8	5	50	17.5	13.5	125	110	165	75
FPD50-120F/280	1000	25	12	12.5	8	50	17.5	13.5	125	110	165	75
FPD50-160F/280	1300	23	16	12.5	12.5	50	17.5	13.5	125	110	165	75
FPD50-200F/280	1300	19.5	20	8	16	50	17.5	13.5	125	110	165	75
FPD65-50F/340	700	28	5	15	3	65	17.5	13.5	145	130	185	76
FPD65-80F/340	700	32	8	16	6	65	17.5	13.5	145	130	185	76
FPD65-100F/340	1000	35	10	18	7	65	17.5	13.5	145	130	185	76
FPD65-120F/340	1300	39	12	20	10	65	17.5	13.5	145	130	185	76
FPD80-100F/360	1000	37	10	21	6	80	18	–	150/160	–	200	90
FPD80-120F/360	1300	40	12	26	7.5	80	18	–	150/160	–	200	90

Model	Power(W)	Q.max(m³/h)	H.max(m)	R.flow(m³/h)	R.head(m)	L(mm)	H(mm)	B(mm)	Inlet/G1	Outlet/G2	Pump body material
FPD20-120Z	300	4.5	12	2	8	202	181	145	1″	¾”	cast iron/brass
FPD20-160Z	500	5.5	16	2	12.5	222	181	145	1″	¾”	cast iron/brass
FPD20-200Z	700	8.5	20	2	16	272	244	180	1″	¾”	cast iron/brass
FPD20-260Z	1000	9.5	26	3	20	272	244	180	1″	¾”	cast iron/brass
FPD20-350Z	1300	10.5	35	2	32	295	244	180	1″	¾”	cast iron/brass
FPD25-90Z	300	6.5	9	5	5	209	182	132	1¼”	1″	cast iron
FPD25-120Z	500	8.5	12	5	8	229	182	132	1¼”	1″	cast iron
FPD25-160Z	700	10.5	9	5	12.5	268	244	164	1¼”	1″	cast iron
FPD25-200Z	1300	14.5	12	5	16	268	244	164	1¼”	1″	cast iron

Performance

Covers a wide range of flow and head options. Max flow reaches up to 40 m³/h and max head up to 35 m. Available in threaded and flange connection versions for different pipe sizes. Cast iron or brass pump body provides stable hydraulic performance for water circulation systems.

Operating Condition

Designed for clean water circulation in heating & cooling systems. Single-speed structure for simple operation. Supports multiple installation sizes from DN20 to DN80. Matched rated flow & head ensure reliable continuous operation under design working points.

Motor

Power range from 300W to 1300W. Compact single-phase motor. Stable output torque, low noise during running. Good heat dissipation, long service life, suitable for long-time continuous duty.