Ningbo Fly Automation Co., Limited
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1. Product Name: EFG551B401MO G551B401 ASCO 551 Series 1/4 Inch Aluminium pilot operated spool type Solenoid Valve
2. Delivery
1. If the products we have in store, we will send it out ASAP after payment.
2. If the products which were customized, we will complete the production within a specified period of time, and send it out the first time, we can promise it.
3. We have a variety of ways to deliver goods, usually DHL, Fedex, TNL will be normal ways, If you require use of a courier, we can do it.
4. Also we can send by your delivery acount if you want.
3. Drawing
| prefix option | plage de puis-sance | A | B | C | D | E | weight | |
| monostable | 5/2 bistable - 5/3 | |||||||
| SC | BP | 125 | 174 | 107.7 | 22.5 | 86.5 | 0.86 | 1.37 |
4. Product show
5. FEATURES
• The monostable spool valves in conformity with IEC 61508 Standard (2010
route 2H version) have TÜV (551 series) and EXIDA (551-553 series) certified
with integrity levels: SIL 2 for HFT = 0 / SIL 3 for HFT = 1
• The spool valves have threaded port connections and "NAMUR" style interface
• The same spool valve can be adapted for 3/2 NC or 5/2 function for controlling
double-acting and single-acting actuators
• All the exhaust ports of this spool valve are connectable, providing better
environmental protection, particularly recommended for sensitive areas such as
clean rooms, and applications in the pharmaceutical and food processing sectors
• The valve offers environmental protection against the ingress of liquids, dusts or
any other foreign matter (environmentally-protected construction)
• Can be externally piloted (external air pilot supply) to convert valve to zero
minimum operation by flipping a gasket
• The solenoid valves satisfy all relevant EU Directives
6. GENERAL
Differential pressure 2 - 10,4 bar [1 bar = 100 kPa]
Flow (Qv at 6 bar) 1/4 = 700 l/min (ANR)
1/2 = 3000 l/min
fluids air, inert gas, filtered
temperature range - 25°C to + 60°C
seal materials NBR (nitrile) + PUR (polyurethane)
7. MATERIALS IN CONTACT WITH FLUID
Ensure that the compatibility of the fluids in contact with the materials is verified
Body Aluminium, black anodized
End cover (spring) Glass-filled PA
Interface plates Glass-filled PA
Spool valve internal parts Zamak, stainless steel, (POM), aluminium
Pilot internal parts Refer to specific solenoid catalogue pages
Pilot end covers Aluminium
Core tube Stainless steel
Core and plugnut Stainless steel
Core spring Stainless steel
Seals NBR
Top disc PA
Disc holder POM
Cartridge (low power) Welded, packless AISI 430
Seat Brass
Seat insert POM
Shading coil Copper
Rider rings (low power) PTFE (NF/WSNF solenoids only
1. Product Name: EFG551B401MO G551B401 ASCO 551 Series 1/4 Inch Aluminium pilot operated spool type Solenoid Valve
2. Delivery
1. If the products we have in store, we will send it out ASAP after payment.
2. If the products which were customized, we will complete the production within a specified period of time, and send it out the first time, we can promise it.
3. We have a variety of ways to deliver goods, usually DHL, Fedex, TNL will be normal ways, If you require use of a courier, we can do it.
4. Also we can send by your delivery acount if you want.
3. Drawing
| prefix option | plage de puis-sance | A | B | C | D | E | weight | |
| monostable | 5/2 bistable - 5/3 | |||||||
| SC | BP | 125 | 174 | 107.7 | 22.5 | 86.5 | 0.86 | 1.37 |
4. Product show
5. FEATURES
• The monostable spool valves in conformity with IEC 61508 Standard (2010
route 2H version) have TÜV (551 series) and EXIDA (551-553 series) certified
with integrity levels: SIL 2 for HFT = 0 / SIL 3 for HFT = 1
• The spool valves have threaded port connections and "NAMUR" style interface
• The same spool valve can be adapted for 3/2 NC or 5/2 function for controlling
double-acting and single-acting actuators
• All the exhaust ports of this spool valve are connectable, providing better
environmental protection, particularly recommended for sensitive areas such as
clean rooms, and applications in the pharmaceutical and food processing sectors
• The valve offers environmental protection against the ingress of liquids, dusts or
any other foreign matter (environmentally-protected construction)
• Can be externally piloted (external air pilot supply) to convert valve to zero
minimum operation by flipping a gasket
• The solenoid valves satisfy all relevant EU Directives
6. GENERAL
Differential pressure 2 - 10,4 bar [1 bar = 100 kPa]
Flow (Qv at 6 bar) 1/4 = 700 l/min (ANR)
1/2 = 3000 l/min
fluids air, inert gas, filtered
temperature range - 25°C to + 60°C
seal materials NBR (nitrile) + PUR (polyurethane)
7. MATERIALS IN CONTACT WITH FLUID
Ensure that the compatibility of the fluids in contact with the materials is verified
Body Aluminium, black anodized
End cover (spring) Glass-filled PA
Interface plates Glass-filled PA
Spool valve internal parts Zamak, stainless steel, (POM), aluminium
Pilot internal parts Refer to specific solenoid catalogue pages
Pilot end covers Aluminium
Core tube Stainless steel
Core and plugnut Stainless steel
Core spring Stainless steel
Seals NBR
Top disc PA
Disc holder POM
Cartridge (low power) Welded, packless AISI 430
Seat Brass
Seat insert POM
Shading coil Copper
Rider rings (low power) PTFE (NF/WSNF solenoids only