4-Way

4-way ball valves are used in switching circuits where controlled interconnection of four lines is required by 90° rotary operation. The X-port configuration provides defined flow paths between inlet and outlet ports and must be selected according to the required flow scheme, not only by DN and pressure rating. Typical duties include circuit changeover, bypass service, flow reversal, exchanger distribution, hydraulic systems, process water, air, oils, and other compatible industrial fluids.

This category includes ADLER RT7 and VT5 wafer-type designs, machined from solid bar. Body materials include carbon steel, stainless steel, or special alloy steels depending on version. Available pressure classes cover PN 25 to PN 63 for RT7 and PN 10 to PN 40 for VT5, with ANSI Class 150 available on request for the VT5 series. End connections include BSP / ISO 7 Rp, NPT, and flanged wafer execution. Seats are available in PTFE or RPTFE, with optional PTFE compounds filled with glass, carbon, stainless steel, bronze, or metal-core reinforcement for higher thermal or mechanical loading.

During valve selection and installation, the engineer should verify port orientation, operating angle, possible pressure trapping in the ball cavity, seat and seal compatibility with the service medium, and actuator torque at maximum differential pressure. For automation, an ISO 5211 top flange is available for pneumatic or electric actuation, manual gear operators, limit switches, and solenoid valves. Where compliance or risk assessment requires it, applicable options include fire-safe execution to ISO 10497 / API 607, PED conformity, ATEX suitability, SIL 3 consideration, ISO 15848 Class A fugitive emission performance, anti-blowout stem design, and antistatic protection.