Keystone™ Butterfly Valves

Butterfly valves offer true isolation and control capabilities in a single product. Designed for accurate flow and pressure control, they are ideal in applications where positive isolation is required. Butterfly valves offer reliable high-cycle service for applications in the Oil & Gas (upstream and downstream), Energy (power and steam distribution), Chemical, Petrochemical, Pulp & Paper, HVAC (Institutional), Water and Waste Water Treatment, Life Science and Food & Beverage industries. Butterfly valves can replace gate, ball and globe valves very cost-effectively.

Our butterfly valves are in stock and ready for quick delivery.

The Series 221/222 is a top quality, superior performing resilient seated butterfly valve built for the most demanding installations. We offer 2”-12” sizes in lug and wafer designs with various seat and disc options. Our bi-directional dead-end capability, up to 250 PSI, makes this design a preferred general utility option.

The Series GRW/GRL is a heavy-duty resilient seated butterfly valve with a field replaceable seat, available in a wide choice of materials for many demanding applications. With a pressure rating up to 230 PSI, this valve is the leader in performance. We offer an optional EPDM seat with a 300° F rating. These valves are available in 2”-36” sizes, in both wafer and lug designs.

The K-LOK High Performance Butterfly Valve offers unique features that allow the valve to exceed all other designs within its class. A high CV disc with a true interference seat makes the K-LOK the best performing product available for general and critical applications. The valves are available with PTFE, RTFE, elastomer, fire-safe and metal seats, in a wide range of body and disc materials from 2”-36” with optional direct mounting actuation to eliminate costly brackets and couplings.

Proconex has an extensive inventory of control, isolation, and pressure relief/safety valves—all the brands you need. We stock most valves and related devices at one of our three regional warehouses and have access to many more through our Emerson partnership. When it comes to valve automation, we offer the largest portfolio of actuators and controls available in the market today. We have the applications experience and customization capabilities to find the optimum solution for your valve automation needs. In addition, we offer quick delivery and a range of services to keep your plant operating safely and efficiently.