Category: BIFFI

Stainless steel spring return and double acting pneumatic quarter-turn actuators Output torques to 13545 Nm

GENERAL APPLICATIONS

For remote control of any quarter-turn application: ball, butterfly, rotary plug or damper www.ge-drive.com style valves, etc. To be used in chemical process, food and beverage, iron and steel, off-shore marine, pharmaceutical, power, oil and gas, pulp and paper, and textile industries.

TECHNICAL DATA

Supply pressure: 3 to 11 bar(see torque charts)

Supply medium:  Air or any gas compatible with materials of construction

Temperature rating

Standard range: -29°C to 99°C

Optional range: -54°C to 149°C

Angular rotation:  90 degrees (adjustable between 82 and 98 degrees)

Mounting pattern:  ISO 5211

Protection: IP66; IP68 (optional)

Certification:  SIL3 capable

FEATURES AND BENEFITS

• Innovative stainless steel construction provides superior internal and external corrosion resistance.

• Scotch yoke design using precision bearings eliminates dead band in the yoke mechanism, providing the greatest torque output at the beginning and end of stroke.

• High strength 17-4PH stainless output shaft transmits torque and gives long service life.

• Heat-treated stainless steel thrust pin and rollers transfer piston force to yoke to reduce friction for longer life and more efficient torque transmission.

• Bi-directional travel stops provide accurate valve rotation adjustment.

• PTFE piston bearings, piston rod bushings and output shaft bushings provide longer life, reduce maintenance and require no lubrication.

• Universal design position indicator and pointer allows for either parallel or perpendicular mounting.

• Stainless steel construction allows proximity switches to be direct-mounted in the actuator housing, eliminating the need to mount bracket and cam assemblies on top.

• NAMUR drive slot maintains a compact assembly for accessory-driven components with no couplings necessary.

• Available in symmetrical and canted yoke design to suit application.

• Spring return model design requires no special tools to disarm springs safely and easily, reducing down time.

DOUBLE ACTING – MODELS 003 TO 100

DOUBLE ACTING – MODELS 135 TO 1150

Actuator Description

The RPS actuator features a pneumatic low pressure spring return and is suitable for any angular stroke rotary application such as shutting off and regulating ball, plug, butterfly or vibration dampened valves in heavy duty service.

The actuator consists of a rack and pinion mechanism that drives the linear motion of the pneumatic cylinder in one direction and converts the linear motion of the spring into rotary motion for valve operation in the opposite direction. An adjustable bronze slide supports the lateral force applied to the rack by engaging with the pinion gear. The rack is nitrided to ensure minimum friction.

The spring module contains one spring or two springs in series depending on the model and is fully encapsulated, which ensures personnel safety and easy assembly. External travel limit bolts allow precise angular travel adjustment between 80° and 100°.

The fully enclosed protective housing is made of ductile iron for maximum www.ge-drive.com strength and is suitable for use in harsh environments.

The mounting flanges are identical on both (top and bottom) sides of the housing; the shaft output actuators have the same dimensions but are positioned at 90°. This allows the actuator to be used as a closing or opening spring without modification.

The actuator is assembled to the valve by connecting the actuator housing flange to the valve flange with a sleeve and, using the stem extension shaft, connecting the actuator shaft bore to the stem.

Rotate the jacking bolt with a hand lever or handwheel (available on request) to perform a manual emergency operation of the actuator in opposition to the spring action.

The mounting flange on the top of the housing can be used to assemble limit switches, position sensors, positioners, etc. driven by the actuator output shaft.

Technical data

Supply medium: Air, nitrogen or desulphurisation gas

Operating temperature: Standard: -30°C to +100°C

Optional: -60°C to +140°C

Design pressure: up to 12 bar

Supply pressure: see technical data sheet

Output torque: up to 3700 Nm

Installation

Inspection after receipt of the actuator

– Check that the actuator type, serial number and technical data reported on the nameplate correspond to the order confirmation.

– Check that the actuator is equipped with the accessories included in the order confirmation.

– Check that the actuator has not been damaged during transport: If necessary, repair the coating according to the specifications in the order confirmation.

– If the actuator is received assembled with the valve, it has been set up ex works.

– If the actuator is supplied separately from the valve, check and, if necessary, adjust the setting of the mechanical limit bolts and the setting of the position switches (if any).

Storage

If the actuator needs to be stored for a certain period of time before installation, perform the following steps before installation.

– Place it on a wooden base to avoid damage to the valve coupling area.

– Ensure that there are plastic plugs on the pneumatic and electrical connections (if any).

– Check that the lids of the control assembly and limit switch box (if present) are properly closed.

If stored outdoors for extended periods of time.

– Protect the actuator from changes in weather conditions.

– Replace the plastic plugs in the pneumatic and electrical connections (if any) with metal plugs to ensure perfect sealing.

– Apply oil and grease to the valve plate and valve coupling areas to maintain lubrication.

– Operate the actuator regularly

Maximize your plant’s safety with the most advanced technology

With more than 60 years of experience, Biffi is a recognized market leader in delivering reliable and safe actuation and control solutions, with a proven expertise in solving the most demanding valveautomation needs of oil & gas, power, processing, and water industry operators.

Our focus on technology provides increasingly smart systems to control and monitor valves, and allows us to offer both standard and custom made solutions, enabling Biffi Customers to maximize their plant’s productivity, reducing downtime and ensuring highest performance levels in a safe working environment.

Get top quality products, entirely engineered and manufactured in Italy. In-house and fully integrated design, manufacturing and testing facilities, guarantee the highest quality standards of every Biffi product, which is individually torque and performance tested to maximize its reliability and durability.

There is one best actuation solution for your plant, and we support you in realizing it

Designed around your plant’s requirements

Understanding and solving Customer’s problems, protecting plant assets, personnel and the environment with smarter, safer and more efficient operation is our top priority.

Our team of actuation experts with a unique cross-functional expertise in valve automation, safety applications, process control and digital communications, aims at being a global partner, to effectively support every Customer throughout the whole www.ge-drive.com selection and decisionmaking process.

Rely on us, anytime and anywhere

Biffi’s Lifecycle Services Program allows your plant to operate safely, consistently and

economically, improving your asset reliability and preserving your investment.

Our dedicated Lifecycle Services network covers all geographical areas, ensuring quick and professional support, including site walkdown and asset review, installation,commissioning, maintenance, troubleshooting and repair, STO (Shutdown, Turnaround, Outage) support, upgrade, replacement, retrofit and spare parts management.

Furthermore, the Biffi School of Actuation supports Customers to optimize their plant

performance through dedicated training sessions for site people.

Rely on sophisticated technology content

SIL capable products (IEC-61508 1-7:2010 SIL 2&3) provide exceptional performance in the most extreme operating conditions. Smart control and networking devices improve the actuator capabilities with a wide range of bus communication protocols, position feedback, PST capabilities and more.