Solenoid drain valves ASTA series ESK 985-986 direct action

DN: 1/8"–1/4"
PN: 0–16 bar
Body material: brass
Connection: threaded

Overview Model overview Those. information Download Colors DOP, CAD

Overview

Contains a built-in timer, low resistance, does not require a pressure drop, 360° rotating coil, compact design, light weight, patented technology, quick closing and opening, long service life.

Options

Custom parameters can be made to order
On request: NPT (ANSi 1.20.3), R (BSPT/ISO 7–1), W (BSP), M (metric)
On request: diaphragm, seat and stem seal can be made of FPM (VITON) (-10 °C…160 °C), EPDM (-10 °C…140 °C)
On request: various body coatings, nickel plating, various body materials, internal elements made of stainless steel (for
ESK986), manual override, stainless steel seat, with two mounting holes in the bottom of the valve
On request: other voltage, frequency 60 Hz, coil insulation class F (155 °C), coil fixation
On request: with electronic timer, coil explosion protection for operation in zones 1/21–2/22 (Eex em II T4/T5), coil insulation material – can be reinforced with fiberglass (V0 or V1)
On request: terminal with LED or without terminal, terminal with visual indication and peak voltage, connector with 2 m cable, flat terminals (cable ∅8–10 mm), non-flammable connectors
Other versions on request

Materials

Body: brass
Plunger seal: NBR
Insulating tube: stainless steel (AISI 430FR and AISI 304) for ESK985,
stainless steel (AISI 430FR and AISI 304) or brass for ESK986
Plunger: stainless steel (AISI 430FR)
Springs: stainless steel (AISI 302)
Shielding coil: copper
Seat: brass
Sealing rings: NBR
Internal parts: stainless steel or brass

Model overview

Those. information

Medium: water, low viscosity oils, non-aggressive liquids and gases
Safety function: Normally Closed (NC) (ESK 985 Series) and Normally Open (NO) (ESK 986 Series)
Control type: direct acting
Number of strokes: 2/2 (Ports/Positions)
Dimensions: G1/8" – G1/4"
Connection: Thread G (BSPP / ISO 228–1)
Pressure ranges: 0–16 bar (ESK 985), 0–12 bar (ESK 986)
Media temperature: -10 °C … +100 °C
Ambient temperature: -20 °C – +70 °C
Opening time: 25ms
Closing time: 25ms
Maximum viscosity: 38cSt or mm2/s
Maximum permissible pressure: 24 bar (ESK 985), 18 bar (ESK 986)
No minimum differential pressure required, internal exhaust system (for ESK 986)
Compact design
Valve seal: O-rings
Voltage: AC, DC
Coil can be repositioned without dismantling the valve (independent of AC, DC)
Low pressure loss, low power consumption
Various flow ranges, wide range of flow areas
Installation in any position, but optimally with the coil facing upwards
The medium must be filtered before the valve
Flow rate (Q) can be calculated from the pressure, density and flow coefficient
In accordance with 97/23/EC Pressure Equipment Directive (PED), 2006/95/EEC Low Voltage Directive (LVD), 2004/108/EC Electromagnetic Compatibility Directive (EMC)