Zhejiang Baolun fan coil electric two-way valve stainless steel bellows origin quotation

Zhejiang Baolun valve specializes in the production of central air conditioning fan coil electric two-way valve three-way valve q911f-16t electric ball valve electric valve miniature ball valve
1、 Product features: 1
It is used to control the opening or closing of cold water or hot water air conditioning system pipes to achieve the purpose of controlling room temperature
2
The driver is driven by a single-phase hysteresis synchronous motor, the tan spring of the valve is reset, and the valve is in a normally closed state when it is not working
When it needs to work, the thermostat provides an opening signal to make the electric two-way valve act by connecting the AC power supply
3
Open the valve, and the chilled water or hot water will enter the fan coil to provide air conditioning or heating for the room
When the room temperature reaches the set value of the temperature controller, the temperature controller will power off the electric two-way valve, reset the tan spring to close the valve, so as to cut off the water flow into the fan coil
By closing and opening the valve, the room temperature will always be kept within the temperature range set by the temperature controller
4
The driver of the electric two-way valve is connected with the valve by thread, and the driver can be installed after the valve is installed
Field assembly, flexible and convenient wiring
The plane design of the driver can be installed close to the wall, with small space occupation, reliable and durable products, low working noise, and can work reliably in the high temperature and high humidity environment that often occurs in the concealed fan coil unit

2、 Product overview: the electric two-way valve is a Tao product for fan coil units of central air conditioning supplied by Zhang
It is composed of a driver and a valve body
The driver is driven by a synchronous motor and has the functions of Tan spring reset and manual valve opening lever operation
The valve body adopts piston structure
The electric two-way valve can be used with the temperature controller
The temperature controller controls the motor of the electric two-way valve to open or close the valve, so as to realize the on or off of cold water or hot water in the pipeline, and then supply air through the fan coil to realize the automatic adjustment of temperature

3、 Technical indicators: 1
Drive motor: hysteresis synchronous motor
2
Working voltage of driver: 200Vac, 50hz/60hz (AC24V and 110V are available for selection)
3
Power consumption: ≤ 5
7VA。 4
Pressure bearing of valve body: 1
6Mpa
5
Allowable differential pressure: ≤ 0
12MPa。 6
Applicable medium: cold water and hot water
7
Applicable medium temperature: 2 ℃ - 95 ℃
8
Applicable ambient temperature: 0 ℃ - 60 ℃
9
Opening and closing time: open for about 10 seconds and close for about 5 seconds

4、 Structural features: 1
The valve body is forged with brass, stainless steel rod and Tan spring, with small volume and corrosion resistance
2
The structure of the valve core is optimized, and the allowable pressure difference Da without reducing the Kv value
3
The driver is separated from the valve body and can be disassembled quickly
4
The driver has a manual lever for system debugging and maintenance

5、 Material description: 1
Valve body material: forged brass
2
Stem material: stainless steel (aisi302)
3
Driver cover: flame retardant ABS engineering plastic
4
Sealing material: Rubber (NBR)
5
Driver chassis: die cast aluminum alloy
6
Working medium: water
7
Medium temperature: ＜ 96 ℃

6、 Installation note: the motor housing should prevent water droplets from penetrating
When the electric two-way valve is installed in a horizontal pipeline, the included angle between the installation position and the plane shall not exceed 85°
When the valve is installed on the vertical pipe, the motor housing must prevent dripping water from penetrating
Move the manual lever slowly when you move it
When the manual lever moves slowly along the direction of the arrow and is pressed into the notch and stuck, the valve is in the normally open state
Whenever the current passes through the electric two-way valve for the first time, the manual lever will be set to the automatic position again

Siemens Johnson Honeywell Hailin type electric two-way valve special brass stainless steel joint special bellows for central air conditioning
English: corrugated pipe
Application: in instruments and equipment
Purpose: as a measuring element of pressure measuring instrument
Specification: DN20 3/4*200  3/4*250  3/4*300；；； DN25  1*200  1*250  1*300 ；；； DN32  1-1 /4*200  1-1/4*250  1-1/4*300；；； DN40  1-1/2*200  1-1/2*250  1-1/2*300；；； DN50  2*200  2*250  2*300
Note: bellows refers to a tubular Tan sensitive element connected by a foldable wrinkle along the folding and expansion direction
Bellows is widely used in instruments and meters
It is mainly used as a measuring element of pressure measuring instruments to convert pressure into displacement or force
The corrugated pipe has thin wall and high sensitivity, and the measurement range is tens of MPa to tens of MPa
Its Kai mouth end is fixed, the sealing end is in a free state, and the auxiliary spiral Tan spring or Huang Pian is used to increase the tan property
When working, it extends along the length of the pipe under the action of internal pressure, causing the movable end to produce a displacement that is related to the pressure
The movable end drives the pointer to directly indicate the small Da of the pressure
Bellows are often combined with displacement sensors to form a pressure sensor with electrical output, and sometimes used as an isolation element
Since the expansion requirements of bellows are more variable than the volume of Da, its response speed is lower than that of Bourdon tubes
Bellows is suitable for measuring low pressure

The types mainly include metal bellows, corrugated expansion joints, corrugated heat exchange tubes, diaphragm cases and metal hoses
Metal bellows are mainly used to compensate the thermal deformation of pipelines, shock absorption, absorption of pipeline settlement deformation and other functions, and are widely used in Shi chemical, instrument, aerospace, chemical Gong, electric power, Shui mud, metallurgy and other industries
Corrugated pipes made of plastics and other materials play an irreplaceable role in media transmission, power threading, machine tools, household appliances and other fields

Bellows: a pressure measuring Tan element in pressure measuring instruments
It is a cylindrical thin-walled wrinkled shell with multiple transverse corrugations
The bellows has Tan property and can produce displacement under the action of pressure, axial force, transverse force or bending moment
Bellows is widely used in instruments and meters
It is mainly used as a measuring element of pressure measuring instruments to convert pressure into displacement or force
The corrugated pipe has thin wall and high sensitivity, and the measurement range is tens of MPa to tens of MPa
In addition, the bellows can also be used as a sealing isolation element to separate the two media Kai or prevent harmful fluids from entering the measuring part of the equipment
It can also be used as a compensation element to compensate the temperature error of the instrument by using the variability of its volume
Sometimes it is also used as a tan joint of two parts
Bellows can be divided into metal bellows and non-metal bellows according to their constituent materials; According to the structure, it can be divided into single-layer and multi-layer
Single layer bellows is widely used
Multilayer Bellows have high strength, good durability and low stress, which are used in important measurements
The materials of bellows are generally bronze, brass, stainless steel, Monel alloy and Inconel alloy