Project Description
Two-stage, Solenoid valve ZED
2/2 NC cl.B
• two-stage, poppet
• direct acting
• poppet
• manual regulation of flow, separate for each stage
• suited to zero pressure differential conditions (ΔPMIN= 0 bar)
• permanent strainer built-in
• conforms to PN-EN161
• for all types of gas installations and devices which require control, during operation, a two-stage limitation of the gas flow supplied to them
• as a part of the two-stage gas trains supplying mentioned above appliances,
• pneumatic control systems
| Fluid media | Gas fuels, air and other non-aggressive gases |
| Pressure | See tab „Dimensions / Pressures” |
| Fluid media temperature | -10°C ÷ +60°C |
| Ambient temperature | -10°C ÷ +60°C |
| Voltage | AC(50Hz) 24V, 110V, 230V; DC 12V, 24V |
| Power | 15W ÷ 71W x 2 (depending on type) |
| Closing time | <1s |
| Flow regulation range I stage II stage |
Opening in range 0% ÷ 100% 0% ÷ 100% of full opening |
| Operation type | Continuous (100%) |
| Degree of protection | IP54 |
| Valve body material | Aluminium alloy |
| Sealing material | Nitrile-butadiene rubber NBR |
| Mounting position | coil upwards -acceptable deviation from vertical position up to 90O |
| Typ | Dn | Rp | A [mm] |
B [mm] |
E* [mm] |
L [mm] |
PMAX [bar] |
ΔP [bar] |
M [kg] |
|---|---|---|---|---|---|---|---|---|---|
| Threaded connection: | |||||||||
| ZED-20 | 20 | 3/4 | 220 | 22 | 77 | 105 | 0,25 | 0/0,25 | 3,20 |
| ZED-25 | 25 | 1 | 230 | 28 | 80 | 115 | 0,25 | 0/0,25 | 3,50 |
| ZED-32 | 32 | 1 1/4 | 290 | 37 | 101 | 145 | 0,25 | 0/0,25 | 6,78 |
| ZED-40 | 40 | 1 1/2 | 323 | 43 | 110 | 180 | 0,25 | 0/0,25 | 8,36 |
| ZED-50 | 50 | 2 | 335 | 41 | 140 | 193 | 0,25 | 0/0,25 | 10,15 |
| ZED-65 | 65 | 2 1/2 | 360 | 61 | 170 | 240 | 0,15 | 0/0,15 | 12,80 |
| Flanged connection: | |||||||||
| ZED-50k | 50 | 370 | 78 | 165 | 230 | 0,25 | 0/0,25 | 11,26 | |
| ZED-65k | 65 | 390 | 83 | 185 | 270 | 0,15 | 0/0,15 | 13,36 | |
| ZED-80k | 80 | 490 | 94 | 200 | 310 | 0,10 | 0/0,10 | 29,10 | |
| ZED-100k | 100 | 504 | 103 | 220 | 350 | 0,10 | 0/0,10 | 40,46 | |
• the operation of these valves does not depend on the process pressure of the medium fluid nor the flow rate
• they can operate independently of the existing pressure difference ΔP on the valve
• suited to zero pressure differential conditions (ΔP min= 0 bar)
• their design limitation is the value of the maximum pressure difference ΔPMAX that can occur on the valve. It depends on the lifting force of the electromagnet and the nominal diameter of the valve flow orifice (the larger the nominal diameter, the smaller the ΔPMAX value for the same electromagnet)
• with a pressure greater than the maximum differential pressure ΔPMAX, the valve will not work properly (it will suspend)
• short actuation time (from a dozen to several dozen ms)
• high reliability due to the simplicity of the design and a small number of internal parts
• long lifespan – some designs can reach up to several million work cycles
