A new low-emission valve stem spool packing delivers emissions performance of <20 ppm average leakage. Two unique types of graphite packing comprise the new style 212-ULE product. The new packing is self-lubricating for low valve-stem friction, nonhardening, dimensionally stable and corrosion-resistant. The packing can withstand temperatures of –200°C to 650°C in steam and non-oxidizing environments (up to 455°C in media containing free oxygen) and its maximum pressure rating is 4,500 psig. — Garlock Sealing Technologies, Palmyra, N.Y.
This valve packing achieves ultra-low emission
| By Chemical Engineering