SHS & SHD series

HYDRAULIC ACTUATORS SINGLE & DOUBLE ACTING

ProControl SHS & SHD series actuators are similar to the SPS & SPD range. Many components are interchangeable, such as the centre housing, yokes, guide block and spring cans, the only major difference is the hydraulic power cylinder.

KEY FEATURES

• Fabricated entirely from carbon steel.

• Totally enclosed weatherproof housing.

• Scotch yoke mechanism to suit valve torque requirements.

• Low pressure carbon steel hydraulic cylinder suitable for supply pressures up to 120 bar design.

• High pressure carbon steel hydraulic cylinder suitable for supply pressures up to 400 bar design.

• Carbon steel piston with dynamic floating O-ring seals coupled with lubricating piston guide rings.

• Carbon steel spring cartridge (only for single acting) with safety facility which allows safe installation and removal of the whole cartridge assembly.

• AISI 316SS mechanical position indicator (fully sealed IP68 to avoid ingress into the scotch yoke area) complete with VDI/VDE 3845 NAMUR drive slot for monitoring devices.

• Bronze sliding blocks which ensure minimum friction, allowing for a long service life and reducing maintenance costs.

• Bronze thrust bearings and high strength alloy steel chromium plated thrust reaction bar which guides the scotch yoke throughout its stroke and supports all transverse loads generated.

• ASTM A 320 L7 alloy steel tie rods, with standard electrolytic zinc coating according to ASTM B633 FeZn 12 (thickness 12 μm).

• Alloy steel end travel stops allow for accurate angular stroke adjustment.

• Integral manual override facilities.

• Design allows 4 x 90° actuator rotation.

TECHNICAL SPECIFICATIONS

• Supply pressure up to 400 bar design.

• Actuator torque output up to 1.000.000 Nm for single acting and up to 2.000.000 Nm for double acting.

• Spring starting torque up to 600.000 Nm.

• Spring ending torque up to 400.000 Nm.

• Standard operating temperature range -30°C / +100°C.

• Special low temperature application up to -60°C.

• All ProControl pressure containing parts are designed according to ASME VIII div.1 and EN 13445.

• All ProControl actuators are designed for 30 years’ service life.