The QLM and QLD are three-port control valves which have linear characteristics for mixing or diverting service. These valves can be used on thermal oil, compressed air, steam, condensate and some other fluids.They are available in four body materials: cast iron, SG iron, carbon steel or stainless steel. All valves can be supplied with the standard metal-to-metal seats, stellite facing for increased resistance to wear or soft seats for tight shut-off. The standard stem sealing is by spring adjusted PTFE chevrons but high temperature graphite seals or metal bellows with supplementary safety packing may also be specified.
| Spirax-Sarco | |
|---|---|
| Product Category | Industrial Valves |
| Product Number | QLD |
| Product Name | Three-port Control Valve |
| Valve Type | Control Valve |
| Primary Material | Stainless Steel (optional feature); Steel (optional feature); SG Iron, Carbon Steel |
| Media | Steam; Thermal Oil; Air; Compressed Air |
| Valve Size | 0.50 to 8.00 inch (12.70 to 203.20 mm) |
| Maximum Pressure | 188.55 to 580.15 psi (133 to 408 m H2O) |
