PN16
BURKERT 456923 (Type 5282) is a servo-assisted 2/2-way diaphragm valve. A minimum differential pressure is required for the valve to function. The solenoid coils are moulded with a chemically resistant epoxy. The 456923 variant features a stainless steel body, FKM seal, NPT 1 internal thread, and operates at 24 V DC. It is equipped with a service-friendly manual override for start-up and testing.
- Servo-assisted diaphragm valve
- Separating diaphragm for aggressive and contaminated media
- Closing and opening times can be adjusted individually
- Service-friendly manual override
General Technical Data
| Property | Value |
|---|---|
| Orifice | 25.00 mm (1 inch) |
| Port Connection | NPT 1 Internal thread |
| Body Material | Stainless steel 1.4581/316CB |
| Seal Material | FKM (Fluor rubber) |
| Operating Voltage | 24 V DC |
| Pressure Range | 0.20 - 10.00 bar |
| Medium Temperature | 0 °C to +90 °C |
| Ambient Temperature | Max. +55 °C |
| Kv Value (Water) | 10 m³/h |
| Duty Cycle | 100% continuous operation |
| Degree of Protection | IP65 (with suitable connector) |
Circuit Function
Circuit function A (CF A): 2/2-way solenoid valve, servo-controlled, normally closed.
Approvals
Approvals and Conformities
- UL Recognized: The valves are UL Recognized for the USA according to UL 429 (electrically operated valves).
- CSA: The valves are CSA approved for Canada according to CSA 139 (electrically operated valves).
Materials
| No. | Element | Material |
|---|---|---|
| 1 | Coil | Epoxy |
| 2 | O-ring | FKM |
| 3 | Cover | Stainless steel 1.4581/316CB |
| 4 | Spring | Stainless steel 1.4310/302 |
| 5 | Diaphragm | FKM |
| 6 | Diaphragm holder | Stainless steel 1.4401/316 |
| 7 | Valve body | Stainless steel 1.4581/316CB |
| 8 | Manual override | PA |
Dimensions
::: note Dimensions in mm. The dimensions D2 and F2 apply to NPT thread. :::
| DN | A1 | B1 | D2 (NPT) | F2 (NPT) | E1 | L1 | SW |
|---|---|---|---|---|---|---|---|
| 25 | 121.5 | 142.0 | NPT 1 | 16.8 | 70 | 115 | 41 |
Installation and Operation
WARNING
Risk of injury from high pressure in the equipment. Before loosening the pipes and valves, turn off the pressure and vent the pipes.
Mounting Options
Installation can be in any position. Preferably: Actuator upright. To ensure that the solenoid valve functions reliably, a dirt filter (≤ 500 µm) must be installed in front of the valve inlet.
Manual Override
CAUTION
When the manual emergency actuation is locked, the valve can no longer be actuated electrically.
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