Designed Turned/Machined Parts
Precision Breather Valves, Drain Plugs, and Filler Plugs for Demanding Applications


Versatile plug solutions: breather, filler, and drain types, built for longevity and reliability in automotive, hydraulic, and mechanical systems.

Our precision-engineered breather valve is designed to deliver efficient performance within a pressure range of 15 mbar to 100 mbar, ensuring precise ventilation and pressure regulation in critical systems. Crafted from high-quality, durable materials, this compact and robust component is ideal for a wide range of applications across the automotive, mechanical, and industrial equipment sectors, providing reliable functionality and long-lasting performance.
Comparison Table
Feature | PML Breather Valve | Standard Plug/Fitting |
Pressure Range | 15–100 mbar | Not Pressure Calibrated |
Compact Form Factor | Yes | Varies |
Sealing Integrity | Leak-proof | Standard Threads |
Debris Filtering (Magnetic) | Optional in drain plugs | Not Available |
Material Strength | High | Varies |
Customization | Available | Limited |
Corrosion Resistance | High | Moderate |
Application Flexibility | Multi-industry | Limited Use |

At PML, we specialize in designing and manufacturing premium high-performance drain plugs and filler plugs, tailored to meet the rigorous demands of the automotive and mechanical industries. Our products are meticulously engineered to deliver unmatched performance, exceptional durability, and trusted reliability, ensuring optimal functionality for every application.
Engineered for automotive and industrial equipment where durability, magnetic debris capture, and leak-free operation matter most.
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We use high-strength metals like stainless steel and treated alloy steels for extended life and corrosion resistance.
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Drain plugs are equipped with powerful magnets to attract and retain metallic debris, helping extend equipment life.
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Precision machining ensures tight thread tolerance and compatibility with standard and custom fittings.
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Anti-corrosion treatments are applied to withstand oils, fuels, and harsh environmental exposure.
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Every plug is pressure-tested and inspected to meet OEM and international standards.
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Packaged with protective caps and labeling for secure transit and easy identification.
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Delivered on time with customizable logistics and supply-chain integration.
Process Capability
| Feature | Breather Valve | Drain/Filler Plugs |
|---|---|---|
| Pressure Range | 15 – 100 mbar | NA |
| Material Options | Stainless Steel, Alloy Steel | Same |
| Thread Tolerance | Up to ±0.005 mm | Up to ±0.005 mm |
| Sealing | Leak-Proof | Leak-Proof |
| Magnet Integration | No | Optional |
| Size Range | Customizable | Customizable |
| Surface Treatment | Anti-Corrosion Coated | Anti-Corrosion Coated |
| Applications | Automotive, Industrial | Automotive, Hydraulic, Gearbox |
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Maintains optimal system pressure in sensitive components.
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Integrated magnet technology protects your system from internal damage.
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Treated surfaces stand up to oil, fuel, and harsh weather conditions.
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Adaptable to customer requirements across industries and machinery types.
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Engineered for critical safety and system integrity.
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From powertrains to pneumatics and fluid tanks, these plugs serve across sectors.
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With over 60 years of manufacturing excellence, PML delivers Plugs trusted by OEMs and Tier 1 suppliers across sectors demanding robust performance.

ISO 45001
Occupational Health and Safety (OH&S) management systems

ISO 14001
Environmental Management Systems (EMS)

ISO 9001
Quality Management Systems (QMS)

IATF 16949
International Standard for Automotive Management Systems

AS 9100
Aerospace Quality Management System (QMS)
Breather valves regulate internal pressure, allowing air to pass while preventing fluid leakage or contamination.

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