DSI VALVES
Cast Steel Gate, Globe, and Check Valves
For years, Forum’s DSI® cast steel valves have reliably served petroleum refineries, chemical plants, and power generation facilities across the globe. Today, these valves continue to prove their worth in the toughest processing environments.
DSI’s standard cast steel gate, globe, and check valves are built for precision and durability. Each valve is designed and manufactured to keep fugitive emissions under 100 ppm, as verified by accepted engineering practices. Therefore, they are ideal for industries where safety and environmental compliance matter.
Moreover, DSI valves come in a wide range of multi‑turn configurations, including options in stainless steel, carbon steel, and many special alloys. As a result, they can handle even the most challenging fluid compositions and high‑pressure, high‑temperature conditions. At QRC, we supply DSI cast and forged gate, globe, and check valves that meet or exceed national piping standards. Therefore, you can be confident that every valve you select delivers top‑tier performance and reliability for your application.
DSI Gate Valves – Bolted Bonnet
Size Range: 2″ to 54″
ASME Class: ASME Class 150 to 1500
Design Standard: API 600 API 624
Materials: WCB & LCC
Our cast steel gate valves work best for bi‑directional flow and tight shutoff. Thanks to the wedge‑to‑seat design, these valves operate reliably when fully open or fully closed. However, throttling with a partially open gate valve can cause concentrated flow across the seats, which may lead to damage. For this reason, gate valves are ideal in applications where a low pressure drop is a priority and flow needs to be fully stopped or opened.
DSI Globe Valves – Bolted Bonnet
Size Range: 2″ to 24″
ASME Class: ASME Class 150 to 1500
Design Standard: API 623 API 624
Materials: WCB & LCC
On the other hand, our cast steel globe valves are built for precise, controlled flow. They provide repeatable and consistent flow characteristics, thus making them ideal for applications that require accurate flow regulation. Their design allows for easy and smooth adjustment at different positions, making them a preferred choice in general flow control.
DSI Check Valves – Bolted Bonnet
Size Range: 2″ to 36″
ASME Class: ASME Class 150 to 1500
Design Standard: API 594
Materials: WCB & LCC
Meanwhile, DSI cast steel check valves excel in low‑velocity environments. They minimize restriction and reliably prevent backflow in both horizontal and vertical installations. The tilting disc design ensures a quick and secure closure, thus reducing the risk of slamming. As a result, DSI’s range of gate, globe, and check valves delivers durability, precision, and long‑term reliability across a variety of industries and flow conditions.
