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The HTN desuperheating water control valve is a cavitation-preventing multi-stage throttling control valve, also known as a high-differential pressure control valve. It is a novel-structured patented product in China. This valve is mainly used in power plants with units ≤600,000 KW to control the flow of spray desuperheating water for boiler main steam and reheat steam. It can also be applied in the petroleum and chemical industries to control the flow of high-pressure liquids.
The HTN desuperheating water control valve has the following advantages:
The fluid is depressurized step by step, and its direction changes continuously, which increases the flow resistance, controls the flow velocity, prevents cavitation damage, and allows a pressure difference of 15MPa inside the valve.
Multi-stage throttling: 4-stage throttling at large flow rates and 5-stage throttling at small flow rates, reducing flow erosion and abrasion.
The throttling surface is separated from the sealing surface. The surfaces of the valve core and valve core sleeve are hardened to a hardness of approximately HRC70, ensuring tight closure and a long service life.
The surface of the valve core is provided with large notches, so even if the fluid contains solid particles such as 2-3mm welding slag, the valve core will not get stuck and can move flexibly.
It has excellent flow regulation performance and a wide adjustment range (about 60-70%).
Cv value and stroke
Nominal diameter
(mm)
25
32
40
50
80
Cv value
4.3
5.5
6.9
5.4
7
8.8
7.6
10
12.4
13
16
18
18.7
25.7
32.8
rated stroke (mm)
20
25
38
Outline Dimension Table of Valve Body Assembly
Nominal diameter
A
B
T
H1
HA4 actuator
remarks
H2
H3
H2
H3
25
167
175
217
37
383
158
electric actuator Equipped according to customer requirements
32
167
175
235
40
400
158
40
167
180
270
50
429
165
50
187
200
270
50
429
165
80
211
207
390
80
577202 is equipped with VP5
581107 is equipped with ZSB3512
Attachment: A. The overall dimensions and connection dimensions of the HA actuator are as shown in the figure below. Unit: mm
Actuator
stroke
L
H
φd
t
K thread
φB
C
diaphragm area (m²)
weight (Kg)
HA3D
25
196
459
80
30
M14×1.5
350
363
550
31
HA4D
25
202
612
90
35
M18×1.5
470
520
950
68
38.4
215
Installation method:
Vertical installation. There are two types of relative positions between the inlet pipe and the outlet pipe, as shown in the figure below:
Ordering Information
Model
Medium name and inlet temperature
A. For power plants: Provide the unit capacity, and the process parameters of primary and secondary temperature reduction, such as inlet pressure, outlet pressure, maximum flow rate, and pressure difference at maximum flow rate. If there is a reheater, provide the process parameters of the reheater. B. For other users: Inlet pressure, outlet pressure, maximum flow rate, and pressure difference at maximum flow rate
Pneumatic or electric actuator (0-10mADC or 4-20mADC)
Accessories
Relative position of inlet pipe and outlet pipe (choose one from A, B, C, D)
Dimensions of the connecting pipes between the control valve and the inlet and outlet
Special requirements: If the user specifies to use an actuator from a certain manufacturer, please indicate it when placing the order. The actuator can be provided by the user or purchased by our company.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer,Seller
Year Established:
2003
Total Annual:
135000000-16500000
Employee Number:
50~100
Ecer Certification:
Verified Supplier
High-End Die-Shanghai WEYO Automation Technology Co., Ltd. was established in 2021 and is headquartered in Shanghai. It is an innovative technology enterprise that specializes in high-end industrial automation equipment, core components supply, technical services, and solution provision. With the co... High-End Die-Shanghai WEYO Automation Technology Co., Ltd. was established in 2021 and is headquartered in Shanghai. It is an innovative technology enterprise that specializes in high-end industrial automation equipment, core components supply, technical services, and solution provision. With the co...