Key Specifications / Features
The China M641 Graphite Packing Plant offers high-performance combination packing specifically designed for quarter-turn valves. Certified to API 641 standards, it ensures low fugitive emissions with an average leakage rate of just 4 PPMv. This packing is engineered to withstand pressures up to 310 bar, making it highly reliable for demanding industrial applications. Its advanced design and materials provide excellent sealing properties, contributing to both safety and efficiency in valve operations.
- Model no.: MV-20250520-GP-01
- Hits: 1
- Categories: Graphite Packing
- Tags: Graphite Packing, Quarter-turn Valve Packing, API 641 Valve Packing
Detail Information
Product Name: M641 Combination Packing, Graphite Packing
The M641 combination packing is a low-emission sealing solution designed for quarter-turn valves, meeting major low fugitive emission standards such as API 622, ISO 15848, and TA-LUFT.
1. Structure
Sealing rings feature a high-purity die-formed flat graphite ring in the middle section.
End rings are made from M602 die-formed packing material, ensuring reliable sealing performance.
2. Operating Conditions
Temperature Range: -200°C to +450°C (Air); +450°C (Steam)
Pressure Range: up to 4,500 PSI / 310 bar
pH Range: 0 to 14 (excluding strong oxidizers)
3. Compliance & Standards
ISO 15848-1 (up to 400°C)
API-622 (1/4 inch), 2nd Edition
TA-LUFT
4. Performance Under API 641 Fugitive Emission Test
Average Emission Leakage: 4 PPMv
Maximum Emission Leakage: 15.9 PPMv
No need for bolt adjustment after installation (zero bolt retightening cycles)
API 622 TUV Experimental Data Report
Data Report of M641 Packing Group in ISO 15848-1 400 Degree Type Test for Floating Ball Valve
Promotion Conference on Low-Leakage Graphite Packing Technology
The Demonstration of Low-emission Graphite Packing
We conduct life testing experiments on graphite packing in our factory
The ISO 15848-1 test of graphite packing at 400°C was conducted by a third-party testing institution
The promotion of our sealing products at the Valve Technology Forum
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