Product Introduction

The Circulating Pumps for HVAC Systems is a vertical pipeline centrifugal pump designed for heating and cooling circulating systems. Its compact inline structure saves installation space, delivering stable flow and pressure for commercial buildings, factories and municipal HVAC applications.

With flow rates from 5‑80 m³/h and heads from 10‑60 m, the pump can be configured according to project‑specific hydraulic requirements. Different temperature‑resistant versions are available for various HVAC system designs and local standards.

Each pump is performance tested before shipment, and technical documentation, dimensional drawings and selection support can be provided for project evaluation.

Selection and Matching Suggestions

Match flow & head based on system loop resistance:

Calculate total pipeline resistance of your HVAC water loop. Select pump flow and head with 10‑15% margin to offset pipe loss, avoid insufficient circulation or excessive energy consumption.

Confirm working medium temperature and motor grade:

Choose corresponding pump material and motor for cold water, hot‑water heating or mixed‑temperature media. Ensure pump temperature range matches actual operating conditions to extend service life.

Circulating Pumps for HVAC Systems Selection Reference

No.	Model	Rated Flow (m³/h)R	Rated Head (m)	Rotational Speed	Motor Power
1	ISG32-100	5	12.5	2900	0.55
2	ISG32-125	4.5	20	2900	0.75
3	ISG32-125A	4.5	16	2900	0.55
4	ISG32-160	5	32	2900	1.5
5	ISG32-160A	4.5	28	2900	1.1
6	ISG32-200	5	50	2900	3
7	ISG32-200A	4.5	44	2900	2.2
8	ISG40-100	6.3	12.5	2900	0.55
9	ISG40-100A	5.6	10	2900	0.37
10	ISG40-125	6.3	20	2900	1.1
11	ISG40-125A	5.6	16	2900	0.75
12	ISG40-160	6.3	32	2900	2.2
13	ISG40-160A	5.9	28	2900	1.5
14	ISG40-160B	5.5	24	2900	1.1
15	ISG40-200	6.3	50	2900	4
16	ISG40-200A	5.9	44	2900	3
17	ISG40-200B	5.3	36	2900	2.2
18	ISG40-250	6.3	80	2900	7.5
19	ISG40-250A	5.9	70	2900	5.5
20	ISG40-250B	5.5	60	2900	4
21	ISG50-100	12.5	12.5	2900	1.1
22	ISG50-100A	11	10	2900	0.75
23	ISG50-125	12.5	20	2900	1.5
24	ISG50-125A	11	16	2900	1.1
25	ISG50-160	12.5	32	2900	3
26	ISG50-160A	11.7	28	2900	2.2
27	ISG50-160B	10.4	22	2900	1.5
28	ISG50-200	12.5	50	2900	5.5
29	ISG50-200A	11.7	44	2900	4
30	ISG50-200B	10.6	36	2900	3
31	ISG50-250	12.5	80	2900	11
32	ISG50-250A	11.6	70	2900	7.5
33	ISG50-250B	10.8	60	2900	7.5
34	ISG50-250C	10	50	2900	5.5