00041333 Bürkert: Precision Service Kit for DN12 Valves
The 00041333 (commonly known as **41333**) is an authentic Wearing Part Set from Bürkert Fluid Control Systems. This kit is specifically designed for the professional maintenance of Type 0281 solenoid valves with a DN12 orifice. The Type 0281 is a servo-assisted diaphragm valve that utilizes a unique «toggle» linkage or direct-coupled system to ensure reliable operation even with zero pressure differential. Because these valves are often used in critical industrial water treatment and chemical dosing systems, maintaining the integrity of the diaphragm and pilot seals is essential to prevent process contamination or loss of pressure control.
Technical Specifications & Kit Contents
- Orifice Size: DN 12 (12mm).
- Compatible Series: Bürkert Type 0281.
- Seal Material: NBR (Nitrile Rubber) – High resistance to neutral oils and water.
- Spring Material: Stainless steel 1.4310.
- Contents: 1x High-performance diaphragm, 1x Plunger assembly with seal, 1x Body O-ring, 1x Core spring.
Engineer’s Maintenance & Diagnosis
Lifecycle State: Active Spare. Diagnosis: The most frequent symptom indicating the need for the 00041333 kit is internal bypass (leakage when closed). In DN12 models, this is often due to the diaphragm becoming «set» in one position after long periods of inactivity. If the valve fails to open, the pilot orifice within the diaphragm may be obstructed. Installation Advice: Always ensure the fluid supply is isolated and pressure is bled before opening the valve. Use a calibrated torque wrench for the bonnet bolts to avoid asymmetric compression of the diaphragm. Compatibility: This kit is intended for standard brass and stainless steel bodies. It is widely used in Siemens-controlled cooling circuits for power electronics and machine tool spindles.
| Metric | Specification |
|---|---|
| Media Temp | -10°C to +80°C |
| Seal Type | Standard NBR (Perbunan) |
| Pressure Max | 16 bar |
| Weight | 0.045 kg |
Maintenance FAQ
Can I use this kit for high-temperature steam? No. NBR is limited to 80°C. For steam applications, an EPDM or FKM kit must be sourced. Using the wrong elastomer will lead to rapid chemical degradation and valve failure.
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