3-way ball valve, nickel-plated brass, L-hole, Rp 3/4 - Riegler 136329

3-way ball valve, nickel-plated brass, Connection bottom, L-hole, Rp 3/4, DN 20, Operating temp. -15 °C to 120 °C, PN max. 16 bar 3-way ball valve with full throughput, integrated ISO flange plate (ISO 5211) and double-sided sealed ball. Pressurisation is only possible via the lower connection.

Standards and origin

• Standard thread: ISO 7-1
• Customs tariff number: 84818081
• Country of origin: IT

About 3-way ball valves

A 3-way ball valve diverts, mixes or shuts off a medium at a single point in the line, where two separate valves and a tee would otherwise be needed. The series covers DN 5 to 50 mm with pressure ratings from PN 10 to PN 63. The medium can enter through any port, which gives several switching patterns per valve.

What matters when choosing

• Nominal bore from DN 5 to 50 mm follows the required flow and the existing pipework. It also sets the physical size of the valve.
• Threads run from Rp 1/4 to Rp 2 and from G 1/8 female to G 1 1/4. The thread standard is either ISO 7-1 or DIN EN ISO 228-1, and the two are not interchangeable.
• Body materials are nickel-plated brass, nickel-plated brass CW617N, chrome-plated brass and stainless steel 1.4408. Choose stainless where the medium or the surroundings attack brass.
• The seal material is PTFE, RTFE or PTFE combined with FKM. Together with the body it limits the operating temperature, which lies between -20 °C and 180 °C depending on version.
• For the versions with a pneumatic actuator, decide between single acting and double acting. Single acting needs only one control line, double acting is driven pneumatically in both directions.

Typical applications

• Switching between two consumers in compressed air and gas lines
• Diverting cooling water between flow, return and bypass
• Bypass and sampling duty at filter and treatment stations
• Distribution in machine tempering and lubrication circuits
• Automated changeover in process plant using the pneumatic actuator versions

Threads are made to ISO 7-1 or DIN EN ISO 228-1. Bodies come in nickel-plated and chrome-plated brass as well as stainless steel 1.4408, with seals in PTFE, RTFE or PTFE with FKM.