• Servo-assisted diaphragm with diameter of up to DN 50
• Vibration-proof, central screwed coil system
• Damped design for quiet closing
• Energy-saving double coil technology with kick and drop variant
• Explosion-proof versions
| Can be combined with |
Type description |
 |
Type 2518
Cable plug,
form A according to DIN EN 175301-803 |
The 6281 valve is a servo-assisted solenoid valve of the S.EV series. A minimum
differential pressure is always required for the function of the valve. Various dia
phragm material combinations and methods of operation are available depending
on the application. The standard brass housing satisfies all European drinking
water requirements. Dezincification-resistant brass is available for other markets.
The housing offering is rounded out by a stainless steel version. To reduce power
consumption in operation, coils with "Kick and Drop" (KD) electronics assembly
(double coil technology) are available. The valve can be equipped with manual
override for easy maintenance and commissioning. NEMA 4X is available on
request.
|
|
Type 2509
Cable plug,
form A according to DIN EN 175301-803 |
| 1.General technical data |
| Product properties |
|
| Dimensions |
Further infomation can be found in chapter "5.Dimensions"on page 7. |
| Material |
| Seal |
NBREPDM,FKM |
| Body |
Brass acc.to DIN EN 50930-6,stainless steel
(dezincification resistant on request) |
| Inner valve parts |
Stainless stee,Brass,Plastic(PPS) |
| Orifice |
DN 10...DN 50 |
| Circuit function |
Further infomation can be found in chapter “2.Circuit functions”on page 4. |
Themal insulation class of
solenoid coil |
Polyamide coil class B
Epoxy coil class H |
| Performance data |
| Duty cycle |
100%continuous operation |
| Switching time⁴ |
Opening:0.1.….1.5 s
Closing:0.2...4s |
| Electrical data |
| Operating woltage |
24V/DC,24VUC,24V/50...60 Hz,230 VUC,230V/50...60Hz |
| Power consumption |
Further infomation can be found in chapter "6.Performance specifications"on page 12. |
| Voltage tolerance |
±10% |
| Medium data |
| Operating medium |
| NBR |
Neutral fluids (e.g.compressed air,water) |
| EPDM |
Oiland fat-free fluids,hot water,aceton,aqueous alkali solution |
| FKM |
Hot air,per-solution |
| Medium temperature |
| NBR |
-10.…+80℃ |
| EPDM |
-30*...90℃(with epoxy coil to+100℃) |
| FKM |
0℃…90℃with epoxy coil to+120℃) |
| Process/Port connection &communication |
| Bectrical connection |
·Cable plug Type 2518▶,fomA acoording to DIN EN 175301-803
Further infomation can be found in chapter"“Cable plug Type 2518,form Aaccording to DIN EN
175301-803"on page 20. |
| ·Cable plug Type 2509▶,fomA acoording to DIN EN 175301-803 |
Further infomation can be found in chapter"“Cable plug Type 2509,form Aaccording to DIN EN
175301-803"on page 20. |
| Approvals and conformities |
| Directives CE,EAC |
| Degree of protection |
IP65 with cable plug,cable connection and terminal box |
| Explosionprotection |
Further infomation can be found in chapter"3.4.Explosion protection"on page 4. |
| North America(USA/Canada) |
Further infomation can be found in chapter"3.5.North America (USA/Canada)"on page 5. |
| Drinking water |
Further infomation can be found in chapter "3.6.Drinking water"on page 5. |
| Environment and installation |
| Installation |
As required,preferably with actuator upright |
| Ambient temperature |
Max.+55℃ |
|
1.) Measurement at +20 °C, 6 bar at the valve outlet, opening: pressure build-up 0…90%, closing: pressure reduction 100…10%
|
Q: Could you offer the free samples ?
A: Yeah, but it depends products, Pls contact us ina@pneuhydr.com or whatsapp 0086 15168536055
Q: What ' s your business scope ?
A: Our business scope is service of exporter automation parts with full container, and sell air cylinder , air source treatment , solenoid valve , air valve, motorize valve , Brass valve, hydraulic valve, hydraulic cylinder, air and oil fitting, pressure gauge etc .
Q: What types of products you can make ?
A: We can make many kinds of stainless steel, brass ,aluminum materials processing .like high pressure Valve / solenoid valve / electric valve / water valve/pneumatic valve/air cylinder/hydraulic valve/hydraulic accumulator products and so on .
Q: Can the product be made with our logo and brand ?
A: Yes , of course , we can make . we are OEM supplier for years and professional to make . But you need give us the authorization if it is possible .
Q:Can you provide original famous pneumatic and hydraulic,instruments brand goods ?
A: Yes,We can supply like Festo,Smc,Ckd,Burket,Hydac,Rexroth,Siemens,Rosemount,Marsh ,Endress+Hauser etc.
Q: Is there a warranty available?
A: Yes, normally products is one year quality guarantee.
Q: Is the connector in British or Metric system? What is the difference between PT, NPT, and G threads?
A: The G thread is cylindrical and does not seal itself, requiring additional gaskets to prevent leakage. PT and NPT are conical, and the internal and external threads become tighter and tighter when tightened. Sealing is achieved through the deformation of the threads, and sealant or tape is usually used in conjunction to enhance the sealing effect
G-thread is a cylindrical straight pipe used for non sealed connections; PT thread is a conical tube that relies on the deformation and sealing of the thread itself; NPT is also a conical tube with a tooth profile angle of 60 degrees, mainly used in North America
Q: How to convert pressure units: MPa, bar, psi, kg/cm ²?
A: 1MPa=10bar≈145psi≈10kg
Q:What usually causes the burnout of solenoid valve coils?
A:Incorrect voltage and hz, frequent switching, pilot head entering liquid,valve core and spring problem,environment hot,heavy vibration etc.
Q: What should be noted for pneumatic components in high temperature or extremely cold environments?
| Focus Point |
High Temperature Environment Countermeasures |
Extreme Cold Environment Countermeasures |
| Seals |
Fluororubber, PTFE |
Low-temperature nitrile, silicone rubber, polyurethane |
| Lubrication |
High-temperature synthetic grease (low volatility) |
Low-temperature grease (low pour point, low viscosity) |
| Air Supply Treatment |
Strengthen cooling, efficient water removal |
Ultra-low dew point drying (refrigeration + adsorption type), heat tracing |
| Metal Components |
Reserve expansion clearance |
Select materials with low-temperature toughness, prevent leakage due to cold shrinkage |
| Control Components |
High heat-resistant grade coils, heat dissipation, low power consumption |
Install insulation boxes, local heating, prevent cold condensation |
| Installation |
Keep away from heat sources, add heat insulation plates |
Avoid exposure to wind and snow, wrap with thermal insulation materials |
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