KTB and KTZ type specialized circulating booster pump for refrigeration, heating and air conditioning

1、 Characteristics of KTB and KTZ type specialized booster pumps for refrigeration, heating and air conditioning:

1. We have integrated the characteristics of energy-saving products recommended by the country for use in models such as IS, IT, XA, etc., and made improvements in the selection of structural materials, bearings, shaft seals, lubrication, and other aspects. This type of pump has the characteristics of reasonable structure, small volume, light weight, high reliability, and easy maintenance.
2. In order to achieve universality, only 4 out of 72 specifications of water pumps have shafts, bearings, and coupling covers, reducing spare parts and facilitating maintenance and management.
3. Adopting an open door structure, the pump body and bearing body are separated from the back of the impeller. During maintenance, there is no need to disassemble the pump body and inlet and outlet pipelines. Simply disconnect the coupling and move the motor to remove the impeller and other components for maintenance
4. The impeller adopts hydraulic and dynamic balance, and there are sealing rings before and after the impeller. The pump plate is equipped with balance holes, which can effectively balance the axial force of the pump. The impeller material is made of wear-resistant alloy cast iron or precision cast copper, and users can choose according to their usage (specified when ordering).
5. Adopting a specially designed wear-resistant mechanical seal device, the normal service life exceeds 10000 hours, ensuring no water leakage at high water levels and stable and reliable operation.
6. Our company's unique suspension structure ensures more stable operation of the unit, using high-strength stainless steel shafts and matching imported high-quality bearings. The bearing lubrication structure adopts 7019 # high-grade bearing grease lubrication.

2、 KTB, KTZ type refrigeration and heating air conditioning dedicatedpressurizationPump working conditions:
1. The suction pressure is ≤ 1.6MPa, or the maximum working pressure of the pump system is ≤ 1.6MPa, that is, the pump suction inlet pressure+pump head is ≤ 1.6MPa, and the pump static pressure test pressure is 2.5MPa. Please specify the system working pressure when ordering. When the working pressure of the pump system is greater than 1.6MPa, it should be separately stated when ordering, so that the overcurrent and connection parts of the pump can be made of cast steel materials during manufacturing.
2. Working temperature 0-105 ℃
3. Mainly used for suction and delivery of diluted, clean, non corrosive water and liquids with physical and chemical properties similar to water that do not contain solid particles or fibers.

3、 Product advantages:
More energy-efficient: YE2 motor, efficiency increased by 2-4%; Special structure impeller, excellent hydraulic model, smooth liquid flow, minimal loss, ensuring optimal pump performance.
Quiet: The motor is directly connected, the machine and pump are coaxial, with low vibration and noise; Reasonable arrangement of motor heat dissipation fins, noise reduction, high-quality bearings, smooth and quiet operation; The large-diameter impeller undergoes strict dynamic balancing to reduce vibration.
More convenient: modular design, strong universality of components, easy disassembly; The pump body is supported by the foot, ensuring stable and reliable operation.
More cost-effective: bearings with full shaft and special structural configurations; High quality castings with high dimensional accuracy and beautiful appearance; The YE2 motor has strong overload capacity and other characteristics, significantly reducing maintenance costs, greatly extending pump life, and saving management costs by 50% -70%.
More exquisite: The independent installation structure greatly reduces the footprint and saves more than 40% of building investment. The low-power pump can be installed at any position in the pipeline like a valve, without the need for a bottom plate and occupying no pump room area.
Longer lasting: The shaft seal adopts a new type of machine seal, which extends the service life by 2 times; The forced circulation system improves its operating environment by extending the seal of ordinary domestic water pumps by more than twice without leakage. YE2 motor, F-class insulation, high-quality single-stage pump can still be reliably used at rated power even at 120 ℃.

4、 Model meaning:
KTB200-150-400A/B
KTB Refrigeration and Air Conditioning Pump
200- Pump suction diameter 200mm
150- Pump discharge diameter 150mm
400- nominal diameter of impeller 400mm
A - First cutting of impeller diameter of the same model
B-Second cutting of impeller diameter of the same model

5、 Performance parameters:

serial number	model	traffic	head	power	speed
		m3 /h	m	KW	r/min
1	65-40-210	18	12.5	1.5	1450
2	65-40-260	18	22	3	1450
3	65-40-315	12.5	32	4	1450
4	65-40-320	18	35	5.5	1450
5	80-50-210	30	13.5	2.2	1450
6	80-50-250	25	20	3	1450
7	80-50-260	32	22.5	5.5	1450
8	80-50-315	25	32	5.5	1450
9	80-50-320	40	34	11	1450
10	80-50-320A	38	30	7.5	1450
11	100-65-210	55	14	4	1450
12	100-65-250	50	20	5.5	1450
13	100-65-260	60	22.5	7.5	1450
14	100-65-315	50	32	11	1450
15	100-65-315A	48	28	7.5	1450
16	100-65-320	65	34	15	1450
17	100-65-320A	62	30.9	11	1450
18	125-100-200	100	12.5	7.5	1450
19	125-100-200A	93.5	11	5.5	1450
20	125-100-250	100	20	11	1450
21	125-100-250A	93.5	17.5	7.5	1450
22	125-100-250B	86.5	15	5.5	1450
23	125-100-315	100	32	15	1450
24	125-100-315A	95.5	28.5	15	1450
25	125-100-315B	90.8	26.4	11	1450
26	125-100-400	100	50	30	1450
27	125-100-400A	93.6	44	22	1450
28	125-100-400B	88	38	18.5	1450
29	125-100-210	142	13	11	1450
30	125-100-260	148	22	15	1450
31	125-100-320	146	34	22	1450
32	125-100-320A	142	28	18.5	1450
33	125-100-410	150	52	45	1450
34	125-100-410A	144	48	37	1450
35	125-100-410B	140	40	30	1450
36	150-125-250	200	20	18.5	1450
37	150-125-250A	187	17.5	15	1450
38	150-125-260	240	21	22	1450
39	150-125-260A	230	18.5	18.5	1450
40	150-125-315	200	32	30	1450
41	150-125-315A	187	28	22	1450
42	150-125-315B	173	24	18.5	1450
43	150-125-320	240	32	30	1450
44	150-125-320A	230	26	22	1450
45	150-125-400	200	50	45	1450
46	150-125-400A	187	44	37	1450
47	150-125-400B	173	38	30	1450
48	150-125-410	245	50	55	1450
49	150-125-410A	245	45	45	1450
50	200-150-260	315	20	30	1450
51	200-150-260A	280	16.2	22	1450
52	200-150-250	400	20	37	1450
53	200-150-250A	374	17.5	30	1450
54	200-150-320	315	32	45	1450
55	200-150-320A	280	28	37	1450
56	200-150-315	400	32	55	1450
57	200-150-315A	374	28	45	1450
58	200-150-315B	350	24	37	1450
59	200-150-400	400	50	90	1450
60	200-150-400A	380	44.5	75	1450
61	200-150-400B	340	38	55	1450
62	200-150-410	315	52	75	1450
63	200-150-410A	300	46	55	1450

Note: 1. KTB is connected through a coupling, while KTZ adopts a direct connection (motor and pump coaxial).

2. The surface of the pump shaft in contact with the medium is all chrome plated, which is corrosion-resistant.
3. If there are special requirements for stainless steel shafts or other accessories, please indicate in the inquiry
4. Partial pump models

6、 Start and stop:
Preparation before starting:
1. Test whether the motor rotation is correct. From the motor end, the KTB pump rotates clockwise. The test time should be short to avoid dry wear of the mechanical seal.
2. Open the exhaust to fill the entire pump body with liquid, and then close the exhaust valve when it is full.
3. Check if all parts are normal.
4. Manually rotate the pump to allow lubricant to enter the mechanical seal end face.
5. High temperature type should be preheated first, with a heating rate of 50 ℃/hour to ensure uniform heating of all parts.
start:
1. Fully open the inlet valve. 2. Close the valve of the discharge pipeline. 3. Start the motor and observe if the pump is running correctly. 4. Adjust the opening of the outlet valve to the desired operating conditions. If the user has a flow or pressure gauge installed at the pump outlet, the pump should be operated at the specified point in the performance parameter table by adjusting the opening of the outlet valve. If the user has a flow or pressure gauge installed at the pump outlet, the motor current of the pump should be measured by adjusting the opening of the outlet valve to operate within the rated current. Otherwise, it will cause the pump to operate at overload (i.e. high current operation) and cause the motor to burn out. The opening size of the outlet valve that is adjusted correctly is related to the working conditions of the pipeline. 5. Check the leakage of the shaft seal, and under normal circumstances, the mechanical seal leakage should be less than 3 drops per minute. 6. Check that the temperature rise at the motor and bearings is ≤ 70 ℃.
parking:
2. The high-temperature type should first cool down, with a cooling rate of less than 10 ℃/minute, and then lower the temperature to below 80 ℃ before parking. 2. Close the valve of the discharge pipeline. 3. Stop the motor. 4. Close the inlet valve. 5. If parking for a long time, the liquid in the pump should be drained completely.

7、 Product maintenance:
1. Maintenance during operation:
(1) The imported pipeline must be filled with liquid, and the pump is prohibited from running for a long time in a cavitation state. (2) Regularly check the motor current value and ensure it does not exceed the motor rated current. (3) After long-term operation of the pump, if the noise and vibration of the unit increase due to mechanical wear, it should be stopped for inspection. If necessary, vulnerable parts and bearings can be replaced.
2. Mechanical seal maintenance:
(1) Mechanical seal lubrication should be clean and free of solid particles. (2) Mechanical seals are strictly prohibited from working under dry grinding conditions. (3) Before starting, the pump (motor) should be turned a few times to avoid sudden starting causing damage to the graphite ring. (4) The allowable deviation for sealing leakage is 3 drops per minute. Otherwise, it should be checked.