Technical Specifications
The document outlines the specifications for self-lubricated rod guide piston valves, suitable for fluid control up to +120°C. The valves are available in angle-seat or right-angle-seat configurations, with sizes ranging from 1/2" to 2" (PN16). They feature pipe threads compliant with ISO228 standards and are available in Normally Closed (NC), Normally Open (NO), and Double Action (DA) versions. The valves support unidirectional flow from 1 to 2 and operate within an ambient temperature range of -20° to +60°C. The pilot pressure required is between 4.0 bar and 8.0 bar.

Materials and Construction
The valve body, spacer, and seal holder are made of brass, while the piston is constructed from aluminum. The cylinder is made of anodized aluminum, and the piston rod is stainless steel AISI 304. The rod wiper is made of PTFE, and the rod guide is a self-lubricated technopolymer. Internal o-rings and shutter seals are made of FKM, with PTFE or EPDM options available upon request. Atex certification is also available upon request.

Performance Data
The datasheet provides detailed performance data for various models (SELUB Y and SELUB T) under different pilot pressures. The maximum differential pressure (ΔP Max) and flow coefficient (Kv) are specified for each model, indicating the valve's capacity to handle fluid flow under specified conditions. The flow coefficient Kv represents the volume flow rate of water passing through the valve under a differential pressure of 1 bar, temperature range of 5-40°C, and a density of 1000 kg/m³.

Key Features
- Self-lubricated rod guide for reduced maintenance.
- Suitable for high-temperature fluid control up to +120°C.
- Available in multiple configurations and sizes.
- Constructed with durable materials like brass, aluminum, and stainless steel.
- Optional Atex certification and alternative seal materials available.