Harvel LXT® fitting and valve components are manufactured from the same low-extractable material as the pipe. This provides entire system consistency and compatibility, while ensuring that extractable contamination is kept to a minimum. Leading-edge stress analysis technology is applied in the design of Harvel LXT fitting and valve components to optimize strength and performance in critical applications.
High-quality Harvel LXT components are designed to yield optimum performance for each fitting. Material reinforcement is uniformly placed in stress-concentration areas providing for substantially improved pressure-handling capability. Specialty transition fittings incorporate a stainless steel retaining ring that provides a strong, leak-tight seal for plastic-to-metal transitions while reducing problems associated with overtightening. This design reduces radial stress encountered with typical threaded connections, avoiding the need for system pressure de-rating as is often seen with non- reinforced plastic threaded joints.
All LXT fittings are produced in strict dimensional compliance with ASTM D2467 to Schedule 80 dimensions. GF components produced to these dimensions ensure that strong, leak-tight connections with exceptional pressure-bearing capability can be assembled quickly using inexpensive joining tools.
Diaphragm valves: Harvel LXT diaphragm valves are engineered to provide accurate throttling control and shut-off, utilizing a positive-stop, non-rising stem. The Weir-type design incorporates a PTFE diaphragm for maintaining purity, and uses EPDM O-ring seals on the union connections. A low- profile true union design minimizes space while allowing for ease of installation and maintenance. Valves are supplied with both socket and threaded-end connectors for versatility. They incorporate a built-in position indicator, and are operated with a high-impact, hand-wheel style handle for easy operation. Harvel LXT diaphragm valves are available in sizes 1⁄2" through 2" and carry a maximum pressure rating of 150 psi at 73°F.
Ball valves: Harvel LXT quarter-turn True Union Ball Valves incorporate the same high degree of unique engineering design characteristics as the diaphragm valves. Among these characteristics are heavy-bodied construction with strong buttress threads, full Schedule 80 bore to minimize pressure drop, PTFE floating seat design to minimize seat wear, EPDM or FPM o-ring seals, Safe-T-Shear® stem, socket and threaded end connectors, and True Union design for ease of installation and maintenance. Harvel LXT ball valves are available in sizes 1⁄2" through 4". The 1⁄2" through 2" True
Union Ball Valves carry a maximum pressure rating of 235 psi, non-shock at 73°F. The 3" and 4" carry a maximum pressure rating of 150 psi, non-shock at 73°F.
Tee style ball valves: The True Union Tee-Style Ball Valve design integrates valve and tee fitting for direct branch take-off laterals. The close proximity of the valve to main- line emulates a “zero deadleg” design to minimize any areas of fluid stagnation. Custom produced to specified tee and valve connection sizes.
Needle valves (globe and angle) are available in 1⁄4", 3⁄8" and 1⁄2" size range with a variety of options.
Check valves: True Union Ball Check valves are available in 1⁄2" through 4" size range. Sizes 1⁄2" through 2" carry a maximum pressure rating of 235 psi for water, non-shock at 73°F. Sizes 3" and 4" carry a maximum pressure rating of 150 psi for water, non-shock at 73°F.
Gooseneck mount lab fixtures are available in 3⁄8" and 1" size range. Contact GF for options and additional detailed information.
Gauge guards are available in 1⁄4" and 1⁄2" size range with a variety of options. Contact GF for options and additional detailed information.
Van Stone-style flanges are available for transition to alternate materials or where disassembly may be required. This unique two-piece design incorporates a rotating flange ring that greatly simplifies bolt hole alignment during installation.