GIG/GIGS/GPO Gas Powered Actuators. GIG/GIGS/GPO gas powered actuators
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1 GIG/GIGS/GPO Gas Powered Actuators GIG/GIGS/GPO gas powered actuators
2 A world Of experience Biffi has been a leading manufacturer of valve actuators for more than 50 years. As one of the few manufacturers with a global presence, we can offer our customers a comprehensive selection of standard as well as specially designed actuation products. The range includes electric, pneumatic, hydraulic, direct gas, gas-hydraulic, compact and subsea actuators. All our actuators are available with a full complement of accessories suitable for a wide range of applications. Our state-of-the-art manufacturing facilities combine lean manufacturing principles with continuous quality auditing and a zero harm work ethic, allowing us to maintain the highest standards of product reliability and quality. Local sales offices and after sales support teams situated in 32 countries worldwide ensure we are on hand to meet the day-to-day flow control requirements of your plant or process. Our network of smart and configuration centres, sales representatives, distributors and agents offices provides local spares inventory, product support and training for each market, with access to our global support services, design, engineering and manufacturing expertise where required. Biffi s commitment to the highest ethical standards in our daily business practices towards our workers, the environment and the wider community, is recognized by the achievement of the following certifications: SA Social accountability standard ISO Quality management system ISO Environmental management system BS OHSAS Occupational health and safety assessment 2 GIG/GIGS/GPO
3 Reliable proven Gas powered actuators Biffi has been a major supplier of actuators for use on gas pipelines for over four decades, with many thousands of units providing reliable, effective service worldwide in the remotest of locations from the Siberian steppes to the deserts of Arabia. Biffi gas actuators offer the major benefit of using the gas flowing in the pipeline for their operation, with no need for any other power source. They are available in two configurations: GIG and GIGS direct gas actuators and GPO gas-over-oil actuators. Both formats are capable of remote and local operation of valves in on-off and modulating heavy-duty service and their selection is dependent on the service and supply medium for each application. Dedicated design Every aspect of Biffi gas actuators has been designed and engineered specifically for use in the harshest of environments and extremes of temperature. Materials have been selected for the highest levels of corrosion resistance and to minimize friction and all components are encased in sealed enclosures, ensuring long service life with minimal maintenance. They are also the most environmentally-friendly actuators available and they ensure up to 50% less gas discharge reducing airborne pollution and minimizing product loss. Effective control All control systems are engineered specifically to suit remote gas pipeline applications, guaranteeing the highest reliability within a compact design. They can be powered electrically or are available for applications where there is no suitable external power source. Automatic and electronic control groups are also available to enable full valve network communication. Each actuator can be supplied with a hydraulic manual override with GIG and GIGS also offering the option of a hand wheel, to suit specific requirements. All gas actuators are supplied as complete actuator systems, factory tested and ready for installation onsite. Efficient scotch yoke design The scotch yoke design has been proven in use to be the most efficient mechanism for all kinds of quarterturn valves, achieving high break torques.both symmetric and canted yoke options are available. torque torque FIG 1 Typical canted yoke profile 0º closed 45º angle position AIR STROKE SPRING STROKE FIG 2 Symmetric yoke mechanism 0 º closed 45 º angle position 90º open 90 º open Technical specifications Design pressure 10 to 105 barg Supply medium Sweet or sour high-pressure gas, nitrogen or instrument air Torque output GIG/GPO: Double acting torque up to 750,000 Nm GIGS: Spring starting torque up to 335,000 Nm Spring ending torque up to 235,000 Nm Ambient temperature Standard range: -30 C to +100 C (-20 F to +210 F) Extended temperature range available gas powered actuators 3
4 GIG/GIGS Gas actuators GIG double-acting and GIGS springreturn actuators provide effective operation for any quarter turn application such as ball, plug, butterfly valves or dampers. These are typically selected when using clean or filtered gas as the supply medium. Separate gas and hydraulic cylinders with hydraulic handpump configuration In the GIG design, the gas and hydraulic fluid are contained in totally separate cylinders mounted on opposite ends of the actuator housing. The actuator is cycled by introducing gas directly from the pipeline to the gas cylinder. Check valves and adjustable orifices in the hydraulic circuit regulate the cycle speed. Reduced gas consumption) Introducing the power gas directly to the gas cylinder means that consumption is much lower than systems using external tanks. GIG/ GIGS actuators are also lighter, more compact and cost-effective than actuators incorporating external gas/ hydraulic tanks. Spring return GIGS spring-return actuators are the ideal solution for failsafe and critical emergency shutdown applications. The spring of the GIGS actuator is contained in a welded cartridge, greatly increasing personnel safety. GPO Gas-over-oil actuators GPO are reliable, double acting, quarter turn gas-over-oil actuators, ideal for extreme applications. They are more typically specified for use when dirty gas is the supply medium. Hydraulic action The actuator is fed by the pressurized gas. It flows through the control valves into the relevant tank depending on whether opening or closing is to be performed. The hydraulic oil flow from the cylinder into the tanks is adjusted by means of two flow control valves, enabling the stroking time of the actuator to be regulated. Each actuator also has a connection port that enables it to be fed by a separate supply line from a gas storage unit or by bottled gas, such as nitrogen, if required. An integral filter prevents the entry of particles and a filter-condensate separator-dehydrator unit can be supplied for wet gas. HYGLA Gas-over-oil actuators for linear valves For the actuation of linear valves, such as through-conduit gate valves frequently used in gas pipelines, there is the Biffi HYGLA series of gas-overoil actuators which use the same high-pressure controls as the GPO. 4 GIG/GIGS/GPO
5 Complete actuation Solutions A wide range of options and accessories are available to ensure that your actuator is ideally suited for each application. Hydraulic manual override (MPH) Each gas actuator can be equipped with an integral manual hand pump and hydraulic oil reservoir. It can be used to open or close the valve safely and reliably at its maximum torque requirement when pipeline pressure is not available. Handwheel manual override (MHW/MRHW) A spoked hand wheel is available as an option on GIG and GIGS models. It has been designed in line with ergonomic principles and regulations to guarantee minimal operator effort. Additional reduction gearing is available for higher torque applications. Torque limiting device When the gas supply pressure varies widely a pressure reducer or patented torque limiting device can be supplied. The torque limiting device consists of 2 pressure piloted valves which stop the gas flow and exhaust the gas enclosed in the gas-over-oil tanks of the GPO series when the output torque exceeds the pre-set value. On GIG and GIGS models, it stops the gas flow but does not vent. Electronic line break system (ELBS) The ELBS is an electronic device designed and built to monitor pipeline integrity and initiate failsafe action when necessary. It measures dynamic pressure trends in the pipeline continuously and sends a command to the actuator to stroke the line valve to the fail safe position when critical anomalies are detected. The ELBS is capable of monitoring five crucial safety parameters and logging up to 1000 events, which can be downloaded to any portable electronic device. Pneumatic line break system The standard line break control operates autonomously and needs no external power source. Comprising a reference tank, calibrated orifice with check valve and a diaphragm valve, it signals the actuator to close the valve automatically when the pressure drop rate in the pipeline exceeds a preset value. Limit switch boxes Limit switch boxes are available with weatherproof or explosionproof anodized aluminium enclosures to provide full environmental protection; independently adjustable switches and a choice of external position indicators. Control systems A range of fully enclosed control systems is available minimizing ongoing maintenance. The standard control system comprises a double 3-way 2-position control valve, which is normally piloted by 2 solenoid valves, one for closing and one for opening, for remote control, although local operation via 2 levers is an option. Gas piloted control valves can also be supplied, requiring no additional power source. Electronic Line Break System Control Systems Hydraulic Manual Override MHP Torque Limiting Device Overview 5
6 Engineered For performance Robust construction Biffi gas actuators are built to last in materials that have been selected specifically to provide optimum performance and an extended service life with minimal maintenance. All the totally enclosed housings are in fabricated carbon steel, to provide maximum strength. A guide bar resists transverse loads and supports the piston rod. Minimal friction Friction is minimised through the use of an electroless nickel-plated and polished cylinder, PTFE-impregnated bronze or sintered bronze bushings, hard chrome plated guide bar, spring container and piston rods. Friction is further reduced through floating type piston seals, which provide low hysteresis and high sensitivity, preventing sticking problems. Maximum corrosion resistance The use of hard chrome plated alloy steels and electroless nickel-plated carbon steels provide maximum corrosion resistance, extending service life. Accurate performance External travel stops allow precise angular stroke adjustment between 82 and 98. In the GPO, speed control is effected by two unidirectional valves which control the oil flow rate independently in either opening or closing, ensuring smooth operation. GPO gas-over-oil tanks The GPO s tanks are engineered, manufactured and tested according to ASME VIII-DIV.1 and incorporate a hydraulic filter. They can also be supplied in accordance with PED European Directive 97/23 EC, or other codes on request. Approvals All GIG, GIGS and GPO products are approved to: SAFETY INTEGRITY LEVEL (IEC :2010) Suitable for use in SIL3 applications 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 6 GIG/GIGS/GPO
7 Exceptional engineering expertise For applications outside those covered by the standard range, the company has the facilities, unrivalled experience and engineering expertise that enable it to create custom-made solutions to meet specific needs. Working closely with customers and end-users, tailor made solutions can be engineered to cover the most stringent applications and operating conditions. Overview 7
8 Biffi reserve the the right to change product designs and specifications without notice. Biffi Italia S.r.L. Località Caselle San Pietro, 420, Fiorenzuola d Arda (PC) ITALY Ph: +39 (0) biffi_italia@biffi.it BIFPBR EN-1311
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