Ningbo Fly Automation Co., Limited
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1. Product Name: EFG551H402MO G551H402 ASCO 551 Series 1/4 Inch Explosion Proof General Service Solenoid Valve
2. Quality Standards
The company for the products are brand new original products, no second-hand and refurbished products, or leave a compensable ten and return the full amount, but the buyer due to our purchase of model error is not responsible for returns, another of the company's sales of products enjoy one year from the date of shipment quality assurance, according to the original quality standards, during warranty with product problems, need confirmation testing by the manufacturer, the supplier to be solved, the demand side due to storage, use, poor maintenance caused by lower-quality product, and not raise objections.
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: EFG551H402MO G551H402 ASCO 551 Series 1/4 Inch Explosion Proof General Service Solenoid Valve
2. Quality Standards
The company for the products are brand new original products, no second-hand and refurbished products, or leave a compensable ten and return the full amount, but the buyer due to our purchase of model error is not responsible for returns, another of the company's sales of products enjoy one year from the date of shipment quality assurance, according to the original quality standards, during warranty with product problems, need confirmation testing by the manufacturer, the supplier to be solved, the demand side due to storage, use, poor maintenance caused by lower-quality product, and not raise objections.
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
