Velan, Inc. Top-entry Ball Valves

Resilient-seated ball valves featuring Memoryseal seating technology, low emissions packing chambers, and other value-added technical features for superior performance. Features and benefits • Exclusive Memoryseal™ seats compensate automatically for wear and fluctuations of pressure and temperature. • Multiple solid cup and cone type PTFE stem sealor graphite packing. • Two-piece self-aligning packing flange and gland. • Stem guides in cover and gland bushing eliminate side thrust. • Longer cycle life. • Lower, uniform torque. • Blowout-proof stem. • Live-loaded thrust washer prevents galling and provides a secondary stem seal. • Meets ASME B16.5, B16.10 and B16.34, API 608, API 598, API 607 Rev. 5/ISO 10497. • Fully-enclosed spiral wound graphite filled stainless body gasket. • Permits in-line access for seat replacement. • ASME Section 8 cover/body flange connectionand bolting provide high sealing integrity of body gasket. • Body-cover joint not affected by pipe stresses. • Wall thickness complies with ASME B16.34. • Can be welded into line without disassembly in accordance with Velan installation instructions. • Stainless steel trim on all valves including handle. • Oval handles with locking device, as well as extensions available. • Ball-to-stem only (NPS 2/DN 50) full port and larger) and stem-to-body static grounding. • Locking devices standard. • Tapping for mounting actuators standard. • AGA and CGA approved, regular port, threaded ends (optional) NPS 1/2 - 2 (DN 15 - 50). • Valves can meet NACE specifications for sour gas service when required. • Optional topworks: live-loaded single or double packing; TA-Luft certified when supplied with PTFE live-loading packing; and bellows seal design. • Fire tested in accordance with API 607 Rev. 5/ISO 10497.