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Help CenterSR203 FCU Used Electric Solenoid Valve for HVAC
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SR203 FCU used electric solenoid valve for HVAC
Product description:
SR203 electric two-way valve consists of SR203 actuator and SR203 brass valve, used in controlling the cold or hot water pipe on or off in air conditioning system, for the purpose of controlling room temperature. valve is driven by hysteresis synchronous motor, returned by spring. When the valve does not work, it’s in normally closed state, when it works, A opening signal is provided by thermostat, to make the electric valve connect AC power and become opening state, cold water or hot water flows into the fan coil, to provide cool air or hot air for room; once the room temperature reaches the setting point of thermostat, the thermostat will shut down the power of electric valve and the spring will return to make the valve closed, thus cutting off the flow of water into the fan coil. As the valve closed or open, room temperature is always maintained at the thermostat setting temperature range.
SR203 electric valve’s actuator and valve itself are installed by threaded connection, So, the actuator can be installed after the valve is installed.
Features:
Built-in auxiliary switch has the function of power-off in place, longer motor life
Actuator control by using three-wires one control line type or three-wires two control line type, the motor power will be automatically cut off when in place
More convenient hand gear in actuator
The actuator can be installed in any direction for easier installation and wiring
Large aperture design, greater flow, no scale, close differential pressure when shut-off
Closed forging process, forging than ordinary strength of up to more than 2 times
The interface can be connected to a threaded pipe, copper pipe and PPR composite pipe
Personalized solutions, fashionable colors to choose from
Sealing seat material is 304 stainless steel, the bowl appearance design makes the sealing sheet under pressure to fall off not easily to fall off or be deformed.
Material Description:
Body material: Forged Brass
Actuator housing: ABS engineering plastic
Driven motor: the one-way motor
Sealing material: EPDM
Technical Parameters:
Valve size: DN15, DN20, DN25
Connection: threaded connection
Valve structure: two-way, three-way
Media: hot / cold water and 60% ethylene glycol
Pressure: PN20
Close differential pressure: 0.2 ~ 0.3Mpa
Power supply voltage: AC220V ± 10%, AC24V, 50 / 60HZ
Consumable power: 4VAC
Actuator thrust: 200N
Stroke: 4mm
Run mode: On or Off
Valve action time: Opening time: ≤18S Closing Time: ≤7S
Model and size
model |
Size (mm) |
|||
A |
B |
C |
D |
|
DN15 two-way valve |
102 |
60 |
- - |
40 |
DN15 three-way valve |
- - |
60 |
130 |
55 |
DN20 two-way valve |
105 |
65 |
- - |
42 |
DN20 three-way valve |
- - |
65 |
135 |
58 |
DN25 two-way valve |
107 |
84 |
- - |
48 |
DN25 three-way valve |
- - |
84 |
140 |
65 |
SPECIFICATION
Model |
Flow Coefficient(KV) |
Thread
|
Differential pressure |
Medium |
Medium Temp |
Ambient Temp |
PN |
power |
DN15 two-way valve |
3.0 |
1/2’’ |
0.30 |
Water/ Hot water |
1-95℃ |
0-60℃ |
2.0 |
AC 24V AC 110V AC 220V 50/60Hz |
DN15 three-way valve |
3.2 |
1/2’’ |
0.30 |
|||||
DN20 two-way valve |
4.5 |
3/4’’ |
0.25 |
|||||
DN20 three-way valve |
4.5 |
3/4’’ |
0.25 |
|||||
DN25 two-way valve |
7.5 |
1’’ |
0.20 |
|||||
DN25 three-way valve |
7.5 |
1’’ |
0.20 |
CERTIFICATION: ISO, TS, API, GOST, CE....etc
We pay much attention in Test process:
(1) Shell Hydrostatic Test
| ANSI B 16.34 Section 7.1 | |||||||
| Valve Size NPS | Test pressure | Test Time. Sce | |||||
| Below DN50 | 1:5 times the 100°F | 15 Sce | |||||
| DN65~DN200 | Rating of ANSI Class | 60 Sce | |||||
| Up DN250 | Max. Operating Pressure | 180 Sce | |||||
| Test pressure should be above 1.5 times than the valve's Max work pressure (100F) | |||||||
(2) Seal Hydrostatic Test
The pressure should be more 1.1 times than working pressure by seal hydrastatic test
| ANSI B 16.34 Section 7.2 | |||||||
| Valve Size NPS | Test pressure | Test Time. Sce | |||||
| below DN50 | 1:1 times the 100°F | 15 Sce | |||||
| DN65~DN200 | Rating of ANSI Class | 30 Sce | |||||
| above DN250 | Max. Operating Pressure | 60 Sce | |||||
| Test pressure should be more 1.5 times than the valve's Max work pressure (100F) | 180Sce | ||||||
(3) Seal Air Test
Seal air leakage test is based on 80PSIG(6kgf/cm2) inert-gas or the air reach the test pressure, then close the valve. after that check the valve whether it is leakage or not.
1.100% factory price, because we are direct producer of ball valve, butterfly valves, check/non-return valves, gate valves and so on.
2.Market, technical support and after-sale service within 24 hours.
3. You can order your own configuration.
A: Manual B: pneumatic C: electric D: bare shaft E: disc with pin F: disc without pin G: double half shaft H: one piece body I: two pieces body J: logo
Fully welded ball valve - Company advantages:
1. We are factory: We have strict quality control system and amounts of testing equipments for different kind of valve, such as size, pressure, working environment etc. also can provide the competitive price.
2. Certification: API, CE, ISO,GOST, TS ..etc
3. Low MOQ: Our factory owns the casting company by itself. We are always ready for providing the sample and producing some small orders, in order to meet the business well.
4. OEM Accepted: We can make the products with the client's demand standard or the customer requirement.
5. Complete Service: We are always ready to hear from you, reply within 12 hours.
6. Quick Delivery: We always keep the large stock for some hot products.
1.What's payment terms? 30% payment in advance, 70% balanced before delivery. (if total value is USD$ 500, we suggest 100% payment in advanve.)
2.What's MOQ? One set. (if small size, we can check if free sample or not, freight need to be paid by customer.)
3.How control the quality of ball valve?
Select high quality raw material; Strict required during machining; Seat material comply with food grade; Tested twice to insure zero leakage; First copper plating disc, then nickle plating disc to increase the adhesiveness
4.Delivery time?
10-15 days after received the advance payment. (if stock, about 10 days)
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