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401 Series 3-Way NC or 4-Way, Direct Mount Pilot Valve
The ASCO Series 401, also known as 8401, is a line of pilot-operated air slide valves designed for air and inert gas service in heating equipment applications. The aluminum valves incorporate a unique sliding and sealing member that provides a durable and non-stick sealing method. Optional flow control regulates cylinder speed in either direction and permits adjustable Cv from 0.2 to 0.8.
Features
- Mount directly to actuators with NAMUR, Keystone, or Worcester interfaces
- Easy conversion from AC to DC by simply changing coil
- Standard momentary/maintained manual operator
- 3/2 is normally closed poppet design for spring return actuators
- 3/2 normally closed or 4/2 operation can be selected by rotating sub-base gasket
- 3/2 normally closed or 4/2 valves have built-in linear flow device capable of controlling Cv from 0.10 to 0.50
- Breather block exhausts to spring side of actuator to prevent corrosion of the actuator
- Unique CA slide and ceramic flow plate for extra-long life
The ASCO Series 401, also known as 8401, is a line of pilot-operated air slide valves designed for air and inert gas service in heating equipment applications. The aluminum valves incorporate a unique sliding and sealing member that provides a durable and non-stick sealing method. Optional flow control regulates cylinder speed in either direction and permits adjustable Cv from 0.2 to 0.8.
Features
- Mount directly to actuators with NAMUR, Keystone, or Worcester interfaces
- Easy conversion from AC to DC by simply changing coil
- Standard momentary/maintained manual operator
- 3/2 is normally closed poppet design for spring return actuators
- 3/2 normally closed or 4/2 operation can be selected by rotating sub-base gasket
- 3/2 normally closed or 4/2 valves have built-in linear flow device capable of controlling Cv from 0.10 to 0.50
- Breather block exhausts to spring side of actuator to prevent corrosion of the actuator
- Unique CA slide and ceramic flow plate for extra-long life
Specifications
| 8401 Series DM Air Slide Valves | |
|---|---|
| Product Specifications | [B202M] NAMUR Interface | 1/4" Pipe | 1/4" Orifice | 2.3 Cv Flow, [B204M] Keystone Interface | 1/4" Pipe | 1/4" Orifice | 4.1 Cv Flow, [B200M] Worcester Interface | 1/4" Pipe | 1/4" Orifice | 7.6 Cv Flow |
| Options | [EF] Explosionproof & Watertight, [SC] Molded Epoxy Coil per 3 x DIN 46244, [U] Molded Epoxy Open Frame Class F Coil with 18” Leads, [WT] Watertight |
| Optional Lead Type | Standard, [L] Continuous Leads |
| Lead Length | Standard, 18" [D], 72" [K] |
| Voltage | AC24/60, AC110/50, AC120/60, AC120/60,110/50, AC220/50, AC240/60, AC240/60,220/50, DC6/DC, DC12/DC, DC24/DC, DC120/DC, DC240/DC |
| Valve Features | |
|---|---|
| Valve: Body Material | Plastic |
| Valve: Seal Material | Low-Friction, Low-Wear NBR |
| Valve: Flow Plate | Ceramic |
| Valve: Core Tube | Stainless Steel |
| Valve: Core and Plugnut | Stainless Steel |
| Valve: Media | Air-Inert Gas |
| Valve: Enclosure Type | Watertight, Explosionproof & Watertight |
| Valve: Pipe Size | 1/4 in |
| Valve: Orifice | 1/4in |
| Valve: Actuation | Solenoid - Air Pilot |
| Valve: Function | 3-Way Normally Closed, 4-Way |
| Valve: Springs | Stainless Steel |
| Valve: Pressure Port | Stainless Steel |
| Valve: Slide Material | Graphite-Filled PTFE |
| Valve: Pilot Body | Molded CA |
| Valve: Brand | Asco |
| Valve: Mounting Position | Direct Mount |
| Valve: Interface Plate | Molded PA |
| Valve: Spool Material | CA |
| Valve: Min Temperature °F | 0 |
| Valve: Max Temperature °F | 104 |
| Valve: Flow Factor (Cv) | 0.50 |
| Valve: Pressure (psi) | > 20 to 150 psi (1.38 to 10.34 bar) |