China-Proportional-Integral-Screw-Motorised-Valve-of-Five-Sets-DN-40-

1.VC-236-40(cold / hot) screw valve body

Product description
    VC-236 series stainless steel two-way\ three-way valve with proportional-Integral driver and thermostat can adjust the flow, it is widely used in central air conditioning system.    

Product features
The valve body and actuator is a flexible combination, can meet the needs of different pressure difference;
The high quality 304 stainless steel casting, high strength structure;
The body structure : two-way, three-way merge, three-way shunt;
The linear flow characteristics, stable regulation, good regulating performance;
The combination with thread equal, simple and convenient installation;
The seal stem with V type and O type double combination, lower leakage.

Technical parameters
Specifications VC-236A Stainless steel body VC-236B High temperature valve (steam valve)
Conventional valve model VC-236 A-32 VC-236 A-40 VC-236 A-50 VC-236 A-65 VC-236 B-32 VC-236 B-40 VC-236 B-50 VC-236 B-65
Dimensions (mm) 32 40 50 65 32 40 50 65
Form two pipe three pipe
Flow coefficient (Kv) 10 20 32 63 10 20 32 63
Close pressure difference (Mpa) 0.4 0.35 0.3 0.2 0.35 0.3 0.3 0.2
Valve stem stroke (mm) 20 20 20 20 20 20 20 20
Body Cast stainless steel 304
The stem Stainless steel 304
Valve stem seal Double V type and O type combination
O type sealing material Fluorine rubber seal
V type sealing material PTFE seal
Valve plate Forged brass
2.5 when 90
Equal internal thread
Water
Less than 95
Linear
Less than Kv 0.02%
Valve on the valve stem closed direction		 Cast stainless steel
Bearing pressure 2.5 Mpa when 90ºC 2.5 Mpa when 180ºC
Connection mode Equal internal thread Equal internal thread
Medium water water/steam
Operating condition Less than 95ºC Less than 180ºC
Characteristic linear linear
Leakage quantity Less than Kv 0.02% Less than Kv 0.02%
Off direction Valve on the valve stem colsed direction Valve on the valve stem colsed direction
 2.VA-7200 analog drive
Product descriptionVA-7200 series actuators are one kind of the electric machine and matched with VA-3100 series valves. There has two types one is the ON/OFF valve and another is analogue valve. It also can be matched with the other valves by dfferent linkers.
Product features
Support material: die cast aluminum, Outer Cover material: PC engineering plastics;
Low power consumption, low noise, high output torque;
Forward and inverted direction action to match the different valve body;
Flexible combination with valve body to meet the needs of different pressure difference;
Magnetic hysteresis clutch motor, with a hysteresis clutch protection function, can produce a stable torque in the case of a standstill so that the valve can rest at any position;
The spring clip and the side clip connection valve body can choose, easy to assemble and disassemble;
The manual adjustment function, convenient installation and maintenance;
It can replace the fixed bracket according to demand, to fit a variety of body.

Technical parameters
  VA-7200-2500 VA-7200-4000
Actual output force (N) 2500N 4000N
Job type Analog quantity
Power Supply 24VAC±15%
Power consumption 12VA
Weight (kg) 3.75
Input feedback signal 0~10V or 2~10V
Input / output signal 0~20mA or 4~20mA
Voltage input impedance >100k
Current input impedance <0.50k
Current output load requirements >1k
Current output load requirements <0.51k
Upper and lower limit ≤3.5%
Sensitivity ±0.2V
Valve connection size Spring clip buckle, can also choose a splint clip
Maximum stroke (mm) 45
Running speed (mm/s) 0.23(50Hz)
Height (mm) 345
Working environment temperature 1ºC~60ºC,10%~95%RH No dew
Storage temperature 20ºC~85ºC
Applicable valve range Cast steel flange valve


3.MT-01
(Proportional-Integral Thermostat for touch screen metal panel)

Product description
MT-01 series of thermostat is suitable for temperature control in the industry, commercial and household.
Product features
High performance, low power industrial grade United States STC Single-chip microcontroller
High-sensitivity touch screen thermostats;
Special treatment of metal drawing board, always keep bright and beautiful;
Several colors optional;
Easy installation, no deformation;
Data memory when power is off;
Work mode: heat \ refrigeration \ ventilation.Technical parameters
  MT01-K MT01-MV
Output signal mode Switch output 0~10V
Line board can choose LCD display SW AN
Man-machine conversation   Regulation2-10ºC Output10V
Backlight color Blue
Working power source 24VAC
Control temperature 5~80ºC
Standard load ≤3A
Self power consumption <1W
Temperature sensing element High precision NTC thermistor
Temperature control precision ±1ºC
Temperature measurement resolution 0.1ºC
Transportation storage environment Temperature: -20~+70, relative humidity: RH < 92%
Shell material PC flame retardant materials, special metal panels, metal plate
Dimension (WxHxD) 100mm×90mm×14mm
Install Type 86 standard cassette box or deepen

4.BS-200( Transformer)
Product description
Meet the power requirements by selecting the voltage;
Screw type wiring terminal.
 Technical parameters
Product code BS-200 40VAvoltage class,Uplift pressure
Ambient temperature at full load Highest (50ºC)
The lowest (-40ºC)
Frequency   50HZ
Voltage   220VAC
Two times during full load   24VAC
Two voltage (no load) BS-200 26.5(1VAC)
Material Science Foot, end plate Cold rolled steel (chrome plated)
Terminal mounting plate Aluminum
Slice Soft Ferrosilicon
Transport weight 1kg 1.2kg

5.NTC (Wind pipe type temperature sensor)
Product description
    NTC temperature  sensor suitable mainly used for pipe water temperature, room air temperature, outdoor temperature monitoring.

Product features 
Sensor: NTC (thermistor);
β=3380, R25ºC =10K;
3 meter lead length, increase cable shielding measures can be extended to 50 meters.Technical parameters
NTCTemperature sensor
TS2.42Y Water pipe immersion, with copper sheathed G1/2 "external Lo / length 100mm
TS2.41Y Water pipe immersion, with copper sheathed G1/2 "external Lo / length 50mm
TS2.45T Air tube insertion type (PC plastic tube) external Lo / length 180mm
TS2.45W Wall mounted type (PC plastic tube)
TS7-3382 Φ5mm Copper sheath, 3 meter common lead wire


 


 

BB Bulk Blending Fertilizer

Bulk Blending Fertilizer (BB Fertilizer/Mixture of Fertilizer) is a kind of compound granular fertilizer mixed by several single fertilizers or compound fertilizers according to certain proportion. It has characters of granule uniformity, less water, moderate granule intensity, no agglomeration, easy to use and low cost.

The formulation (N,P,K content) of BB Fertilizer can be flexibly changed according to the crop`s nutrition requirement, local soil fertility, crops growing levels and other conditions, therefore BB Fertilizer is more scientific and targeted especially for balance fertilization.

Item

Standards

Test result

Appearance

Granular 2-5mm without powder

Pass

Total Nitrogen

12%min

12.13%

P2O5

12%min

12.05%

K2O

12%min

12.1%

Moisture

1.5%max

1.0%

1) Applicable to all kinds of economic crops, such as vegetables, fruits, tubers & tobacco ,etc.

1. Used for vegetables: topdressing in fast growth period, 15-20 kilograms / per acre / each time.

2. Used for tubers: topdressing in expanding period of earthnut, 20-25 kilograms / per acre.

3. Used for tobacco: topdressing in resetting stage, 20-25 kilograms / each time.

4. Used for fruits: topdressing in fruit enlargement period, 0.5-1.5 kilograms / per plant / each time.

2) BB Fertilizer can also mixed by derivatives of urea as slow-released fertilizer or coated urea as control-released fertilizer.

3) Medium Element (Ca, Mg, S) and Trace Element (Fe, Zn, Cu, Mn, B, Mo) or (EDTA-Fe, EDTA-Zn, EDTA-Cu, EDTA-Mn) can be added as special using fertilizers.



Customized fertilizers can be provided.Formula and color and packing can be customized

Npk Bulk Blending Fertilizer 8-20-10 , Npk Bulk Blending Fertilizer , Bulk Blending Fertilizer Npk 16-16-16

Hebei Woldi Trading Co.,LTD , https://www.woldiexport.com

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