Quarter Turn

RPHD/RPHS

Double-acting and spring return hydraulic quarter-turn actuators. For on-off and modulating control of valves in heavy duty service with models for output torques to 2,600 Nm.

Features & Benefits:

  • Totally enclosed, weatherproof housing in high strength nodular cast iron, suitable for use in hostile environments.
  • Integral vent valve prevents accidental pressurisation.
  • Compact rack and pinion design provides simple construction.
  • RPHD double cylinder design allows different torques in opening and closing.
  • Precise angular stroke adjustment between 80° and 100°.
  • Electroless nickel plated and polished cylinder for corrosion resistance and minimal friction.
  • Low hysteresis and high sensitivity piston seals prevent sticking problems.
  • Bushings in sintered bronze charged with PTFE for minimal friction and long life.
  • Fully encapsulated RPHS spring module ensures personnel safety and simplifies assembly.
  • Cast steel option available.

General application
RPHD and RPHS are hydraulic high-pressure actuators suitable for any low-torque quarter turn application such as ball, plug, butterfly valves or dampers.

Approvals
Safety Integrity Level:
(IEC 61508-1÷7:2010): SIL 3
Area Classification:
(ATEX): II 2GD 135°C (T4)
Enclosure Standards:
(IEC 60529): IP67M
(ANSI/NEMA 250): NEMA 4, 4X, 6
Pressure Equipment Directive:
PED 97/23/EC
Machinery Directive:
2006/42/EC

Technical data
Supply pressure: 220 barg maximum
Supply medium: Hydraulic oil or fire‑resistant fluid
Output torques: up to 2600 Nm
Ambient temperature
Standard range: -30°C to +100°C / -20°F to +210°F
Extended range: -60°C to +180°C / -70°F to +350°F

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Technical Data Sheets

RPHD/RPHS Hydraulic Actuator (Metric) (English)

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Technical Data Sheets

RPHD/RPHS Hydraulic Actuator (Imperial) (English)

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Certificates, Approvals & Qualifications

RPD RPS RPHD RPHS ATEX Ex II GD 135°C T4 (English)

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Certificates, Approvals & Qualifications

RPHS IEC 61508 SIL 3 (English)

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Certificates, Approvals & Qualifications

RPHD IEC 61508 SIL 3 (English)

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Certificates, Approvals & Qualifications

EAC DoC Certificate All Pneumatic and Hydraulic Actuators (English)

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Certificates, Approvals & Qualifications

PED Module H H1 2019 07 (English)

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Certificates, Approvals & Qualifications

RPHD/RPHS EAC CoC (Russian)

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