The S&S® RP Series™ is a patented eccentric plug rotary globe control valve for precise control of liquids and gases.
The two-piece stem design opens up the flow gallery for high Cv in a compact envelope, while preserving the stable throttling you expect.
An integral bonnet and the elimination of a lower body flange remove common leak paths, and the interlocking anti-blowout plug-to-stem connection enhances safety.
Standard construction includes an upgraded EN 1.4418 stainless steel plug, with optional Stellite seating surfaces and alloy trims for erosive or corrosive services. Trim reductions and a wide Cv range allow the RP1 to be sized precisely, with rangeability up to 160:1.
High-Capacity Rotary Design – Eccentric plug and rotary globe geometry deliver higher Cv in a compact footprint
Precise Control Performance – Wide rangeability and properly sized trims provide stable throttling and accurate control across a broad operating range
Enhanced Safety – Integral bonnet and patented anti-blowout plug-to-stem connection reduce leak paths and protect against stem ejection
Flexible Sealing Options – Metal and soft seat constructions offer Class IV or Class VI shutoff for control and tight isolation
Durable Trim Construction – Standard hardened EN 1.4418 stainless plug with optional overlay surfaces engineered to resist erosion
Low Emission Packing Options – PTFE and graphite-based packing sets support fugitive emission and high temperature requirements
Automation-Ready Platform – Standard splined shaft interface simplifies direct mounting of SPC’s RS, RC, and RE valve actuators with digital positioners
| SIZE RANGE | 1" - 8" |
| PRESSURE CLASS | Class 150 - 300 Flanged |
| END CONNECTION | RF |
| BODY MATERIALS | • WCC • CF8M • Hast C • Others |
| FLOW CHARACTERISTICS | Equal Percent |
| SHUTOFF CLASS | Class IV, VI |
| TRIM OPTIONS | • Reduced Trim • Bi-Directional • Soft Seat • Hardened |
Whether you need a replacement valve, a custom severe service trim, or help troubleshooting a tough application, our team is ready to help.