PN16
BURKERT 20053129 (Type 0330) is a direct-acting, media-separated 2/2-way pivoted armature solenoid valve configured in Circuit Function A (normally closed, inlet port 1 P/NC). Constructed with a 1.4401 (316) stainless steel valve body and valve seat, the assembly utilizes FKM (fluorocarbon rubber) separating diaphragms and O-rings to isolate the electromagnetic actuator completely from the process fluid. This architecture prevents corrosive, oxidizing, or sensitive media from contacting internal magnetic core components, facilitating stable duty in aggressive and high-purity chemical processes.
Article 20053129 is manufactured with a nominal orifice diameter of 2.0 mm (5/64"), parallel G 1/4 female process threads, and an installation body length of 46 mm. Powered by a 24 V DC epoxy coil, it achieves an opening switching time of 10–20 ms and a closing switching time of 10–20 ms. The electrical system requires 11 W cold starting power and stabilizes at 8 W warm holding power, supporting 100% continuous duty rating (100% ED). The valve delivers a water flow coefficient Kv of 0.08 m³/h and an air nominal flow rate QNn of 85 l/min across an operating differential pressure span of 0.00 to 12.00 bar. This article is supplied without a manual override mechanism.
Oxygen Service and Degreased Execution
Burkert 20053129 is assembled as an oxygen-compatible variant (variable code NL02 equivalent). Non-metallic wetted materials are evaluated and approved according to BAM standards. All wetted components are cleaned free of oil, grease, and silicone in accordance with DIS 1000020797 and packaged accordingly to prevent contamination in sensitive analytical and industrial gas networks.
Technical Data
| Parameter | Value |
|---|---|
| Type | 0330 |
| Article number (Ident number) | 20053129 |
| Valve construction | Valve complete |
| Circuit function | A (2/2-way, normally closed) |
| Fluidic port connection number | 2 |
| Switching positions | 2 |
| Nominal orifice (DN) | 2.0 mm (5/64") |
| Port connection 1 & 2 | G 1/4 internal thread |
| Installation length | 46 mm |
| Flow factor (water Kv) | 0.08 m³/h |
| Nominal flow rate (gas QNn) | 85 l/min |
| Pressure range (liquid & gas) | 0.00 bar to 12.00 bar |
| Flow direction | Above seat |
| Actuator type | Pivoted armature (media-separated) |
| Valve body and seat material | Stainless steel 1.4401 |
| Diaphragm and external seals | FKM (fluorocarbon rubber, 70 Shore A) |
| Solenoid coil material | Epoxy (thermal insulation class H) |
| Operating voltage | 24 V DC |
| Voltage tolerance | ±10% |
| Power consumption (DC) | Cold: 11 W / Warm: 8 W |
| Duty cycle | 100% continuous operation (100% ED) |
| Switching times (DC) | Opening: 10–20 ms / Closing: 10–20 ms |
| Medium temperature range | 0 °C to +60 °C |
| Ambient temperature range | Max. +55 °C |
| Viscosity limit | Max. 37 mm²/s |
| Electrical connection sort | Plug contacts DIN EN 175301-803 Form A (brass contacts) |
| Degree of protection | IP65 (with attached cable plug) |
| Manual override | None |
| Purity standard | Oil- and grease-free per DIS 1000020797, BAM oxygen compliant |
Circuit Function and Flow Assignment
Burkert 20053129 operates strictly in Circuit Function A (CF A). In de-energized rest state, the valve is closed by spring force holding the pivoted armature against the valve seat. When energized by 24 V DC, the magnetic force tilts the pivoted armature against the return spring, lifting the sealing element above the seat and opening the fluid path from Port 1 to Port 2.
| Circuit Function | Connection 1 | Connection 2 | Connection 3 | Operating State |
|---|---|---|---|---|
| WW A (CF A) | P (Inlet / NC) | A (Outlet) | — (Not applicable) | De-energized closed / Energized open |
Operating Pressure Limit with FKM Seals
While Type 0330 metal valves with EPDM or NBR elastomers can operate up to 16 bar in DN 2.0 mm, all configurations fitted with FKM (Fluor rubber) or FFKM diaphragms have an upper operating pressure rating of 12.00 bar. Exceeding 12.00 bar will compromise sealing integrity and actuation margins.
Materials and Chemical Compatibility
The pivoted armature principle employs a flexible elastomer diaphragm that seals the fluid chamber hermetically from the coil housing. The medium contacts only the 1.4401 stainless steel body cavity, the integrated seat, and the FKM diaphragm.
| Item No. | Element | Material |
|---|---|---|
| 1 | Solenoid coil | Epoxy encapsulation (thermal insulation class H) |
| 2 | Diaphragm | FKM (fluorocarbon rubber, 70 Shore A) |
| 3 | O-ring | FKM (fluorocarbon rubber) |
| 4 | Valve seat | Stainless steel 1.4401 |
| 5 | Valve body | Stainless steel 1.4401 |
FKM elastomeric seals offer chemical resistance against oxidizing acids, salt solutions, hot oils with additives, industrial waste gases, and technical oxygen. For medium compatibility confirmation, verify chemicals using the Bürkert resistApp guide.
Dimensions and Installation Interface
Burkert 20053129 utilizes a standardized forged/machined metallic body geometry with inline G 1/4 fluidic connections.
| Parameter | Dimension (mm) |
|---|---|
| Thread standard (D1) | G 1/4 female thread |
| Thread engagement depth (L1) | 9.0 mm |
| Installation length (body width) | 46.0 mm |
| Body depth | 32.0 mm |
| Total valve height | 84.0 mm |
| Mounting hole pattern (bottom side) | 38.0 mm × 24.0 mm |
| Mounting screw specification | M4 screws (depth 8 mm) |
| Minimum thread length at middle connection | 7.5 mm |
| Valve weight | 0.45 kg |
When connecting male fittings into G 1/4 female ports, observe maximum insertion depth. Ensure fittings do not bottom out against the internal chamber step.
Electrical Connection
The solenoid coil features terminal contacts conforming to DIN EN 175301-803 (formerly DIN 43650) Form A. It connects to the control circuit using a compatible cable plug such as Bürkert Type 2518 or Type 2509.
- Polarity Assignment: Connect DC positive (+) and negative (-) to terminals 1 and 2. Because the coil circuit uses direct continuous current windings, terminal 1 and terminal 2 operate independently of polarity.
- Protective Earth (PE): Connect the protective earth conductor to the ground terminal. Maintain electrical continuity between the coil housing and the metallic valve body.
- Fastening Torque: Secure the cable plug central screw with a maximum tightening torque of 1.0 Nm to preserve IP65 ingress protection without damaging the terminal block.
Installation and Maintenance Instructions
Upstream Filtration Requirement
For dependable seat shut-off and diaphragm protection, install a dirt trap or inline strainer with a mesh size of ≤ 500 µm upstream of port 1 (P). Particulate matter trapped under the seat seat can cause leakage or premature seal wear.
Pressure and Electrical Safety
- Before dismounting or servicing the valve, switch off fluid line pressure and completely vent or drain all pipe sections.
- Disconnect power supply and lock out circuits against accidental reactivation.
- Hot surfaces: prolonged coil energization causes heat build-up. Allow the coil to cool before physical handling.
- Mounting Orientation: Can be installed in any orientation. The preferred position is with the solenoid actuator upright.
- Piping Alignment: Hold the valve body with an open-ended wrench across the dedicated body flats when threading pipes. Do not use the solenoid coil body as a lever arm.
- Thread Sealing: Use PTFE sealing tape on male pipe threads. Ensure no loose tape ends enter the fluid path.
Compatible Accessories
| Accessory Description | Specification / Form | Article Number |
|---|---|---|
| Cable plug Type 2518 | Form A, 0–250 V AC/DC, unshielded standard | 314802 |
| Cable plug Type 2518 | Form A, 12–24 V AC/DC with LED indicator | 314812 |
| Cable plug Type 2518 | Form A, 12–24 V AC/DC with LED and varistor suppression | 314820 |
| Cable plug Type 2509 | Form A, 0–250 V AC/DC standard connector | 137943 |
| DIN rail mounting plate | Complete kit for 35 mm rail assembly (2/2-way bodies) | 013253 |
| Timer unit Type 1087 | Form A plug-in programmable timer module | 348822 |
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