“HLA” & HLAS HYDRAULIC ACTUATORS FOR LINEAR … HLA/HLAS Hydraulic Actuator © Copyright by BIFFI Italia. All rights reserved. A !"£$ INTERNATIONAL LTD COMPANY 3!"£$ flow control

“HLA” & "HLAS" HYDRAULIC ACTUATORS FOR LINEAR VALVES

HLA/HLAS Hydraulic actuator

© Copyright by BIFFI Italia. All rights reserved.A !"£$ INTERNATIONAL LTD COMPANY

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HLA actuators installed in Saudi Arabia

HLA/HLAS Hydraulic Actuator


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!"£$ flow control

Features• Electroless nickel plated and polished

cylinder for corrosion resistance andminimal friction

• Peculiarly designed piston seals consistingof a teflon U ring with a special elastomercentred into its sealing face, squeezedagainst the cylinder tube by an underlyingO-ring: the combination of the threeelements gives an effective seal, both withlow and high oil pressure, with low frictionand high sensitivity assuring long service lifeand preventing sticking problems

• Hard chromium plated andpolished piston rod in stainlesssteel for corrosion resistance andminimum friction.

• Piston rod supported by bushingmade of bronze with sinteredTEFLON to provide minimalfriction and extended service life

• Stroke adjustment withmechanical travel stop in onedirection. The stroke adjustmentfor the opposite direction is madewith the stem joint

• Factory totally enclosed springcartridge, for single acting version,to prevent any damage topersonnel during assembling ordisassembling.

• Modular design which allows totransform the linear actuator, alsoin field, from spring to close actionto spring to open action orviceversa, using the same pieces.

• Adapter spool in fabricated carbonsteel, specifically designed foradaptation to any type of valvewith provision for local indicator,limit switches and otheraccessories.

• An extensive range of accessoriesis available:

- limit switch boxes -explosionproof, intrinsically safeand/or weatherproof

- limit switches can be provided indifferent types according tocustomer requirements

- position transmitters -explosionproof, intrinsically safeand/or weatherproof

- - oil filters- - solenoid valves - explosionproof,

intrinsically safe and/orweatherproof

- control units for modulatingservice:

- -electrohydraulic "step-by-step"- electrohydraulic proportional

valves complete with electroniccontrol panel

- electrohydraulic servovalves- spool-type or poppet-type (no

leakage) control valves- dump valves, flow regulators,

relief valves- electric pressure switches- bladder-type or piston-type

accumulators PED and ASMEstamped. Accumulators inaccordance with different codeson request

- electrohydraulic power packs, withexplosionproof and/orweatherproof protection,assembled on the actuator orseparate from the actuator

- terminals enclosures, pushbuttonpanels - explosionproof orintrinsically safe and/orweatherproof

• special coatings for offshore orcorrosive environments

• Special versions with built-indump valve and damper for "quickspring operation"

• Hand pump manual overrideavailable

Technical DataSupply medium:

mineral oil or synthetic fluidsAmbient Temp.:

from -30°C to 100°CApplications

Gate, Globe valves

Double Acting and Single Acting

Hydraulic Linear Actuators for On-Off

and regulating service



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"HLA"Double Acting Linear Actuator

"HLAS"Spring Return Linear Actuator



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Biffi can provide a complete range of double acting and spring-return hydrauliclinear actuators “HLA” and "HLAS". These actuators can use the samecylinders .The spring module can be mounted direct for "spring to close" action orreversed for "spring to open" action.

Due to the large range of combinations "thrust-stroke" required for the variousapplications (i.e. gate valve low pressure / high pressure, globe valve lowpressure / high pressure, spring action), please contact the Factory in order toobtain the right actuator design for your application.

Ordering Model designation (LEGEND)

HLA 250k 135 300 MHP

Manual override Stroke (mm) Cylinder diameter (mm) Max. allowable thrust (N) Double acting actuator

HLAS 250k 135 100k 300 CL MHP

Manual override Spring action Stroke (mm) Spring ending thrust (N) Cylinder diameter (mm) Max. allowable thrust (N) Spring return actuator



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Sectional drawingHLA



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Sectional drawingHLA

ITEM DESCRIPTION MATERIAL

1 Cylinder lower flange Carbon steel ASTM A 283 Gr. D •2 Scraper ring Teflon + Nitrile rubber •3 Piston rod seal ring Teflon + Nitrile rubber •4 Back-up ring Nitrile rubber •5 O-ring Nitrile rubber6 Piston rod bushing Steel + Bronze + Teflon •7 Piston guide sliding ring Teflon + Graphite •8 Piston seal ring Teflon + Nitrile rubber9 Cylinder upper flange Carbon steel ASTM A 283 Gr. D

10 Pedestal Carbon steel ASTM A 283 Gr. D11 Connecting joint Alloy steel AISI SAE984012 Screw Alloy steel ASTM A193 B713 Cyliner tube Carbon steel (nicke plated) API 5LX Gr. X5214 Piston rod Stainless steel (chromium plated) ASTM A564

– TP 63015 Piston Carbon steel ASTM A 283 Gr. D16 Tie rod Stainless steel ASTM A564 – TP 63017 Travel stop screw Stainless steel ASTM A193 B8M18 O-ring Nitrile rubber •19 Nut Stainless steel ASTM A194 8M20 Eyebolt Carbon steel AISI SAE 104021 Travel stop screw cover Carbon steel ASTM A 283 Gr. D22 Plug Carbon steel AISI SAE 1040



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Sectional drawingHLAS-H-CL



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Sectional drawingHLAS-H-CL

ITEM Q.TY DESCRIPTION MATERIAL

1 1 Piston rod Stainless steel ASTM A 564 TP 6302 2 Bushing Steel + Bronze + Teflon3 2 Flange Carbon steel ASTM A 283 Gr. D4 1 Lower spring flange Carbon steel ASTM A 283 Gr. D5 1 Spring Spring steel ASTM A 29 Gr. D 92546 1 Spring Spring steel ASTM A 29 Gr. D 92547 4 Retainer ring Stainless steel AISI 4208 1 External tube Carbon steel API 5LX Gr. X529 1 Pistone rod guide tube Nitrided carbon steel ASTM A283 Gr. D

10 1 Upper spring flange Carbon steel ASTM A 283 Gr. D11 1 Head flange Carbon steel ASTM A 283 Gr. D12 4 Screw Alloy steel ASTM A193 B713 1 Cyliner tube Nickel plated carbon steel API 5LX Gr. X5214 1 Piston Alloy steel AISI SAE 984015 4 Plug Stainless steel AISI 31616 4 Washer Copper17 4 Nut Stainless steel ASTM A564 TP 63018 4 Washer Stainless steel AISI 31619 4 Tie rod Stainless steel ASTM A564 TP 63020 1 Plug Carbon steel ASTM A 283 Gr. D21 1 Adjusting screw Stainless steel ASTM A564 TP 63022 1 Friction bar Nylon23 2 Guide sliding piston ring Teflon + Graphite •24 1 Piston seal ring Teflon + Graphite + Nitrile rubber •25 1 Piston rod seal ring Teflon + Graphite + Nitrile rubber •26 2 O-ring Nitrile rubber •27 2 Back-up ring Nitrile rubber •28 4 Nut Carbon steel AISI SAE 104029 4 Stud bolt Alloy steel ASTM A193 B730 1 Support joint Carbon steel ASTM A 283 Gr. D31 1 Index Carbon steel ASTM A 283 Gr. D32 1 Screw Stainless steel AISI 31633 1 Connecting joint Alloy steel AISI SAE 984034 4 Screw Alloy steel ASTM A193 B7



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Example of Control Schematics forDouble Acting HLA Actuator



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Example of Control Schematics forSpring-to-Close HLAS Actuator



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Example of Control Schematics forDouble Acting HLA Actuator with Power pack



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HLA & HLAS



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HLA



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NORWEGIAN DISTRIBUTOR: EllINGSEN NOR INSTRUMENTS

Haakon Ellingsen ASÅrenga 8, N-1340 Skui | P.O. Box 184, N-1309 Rud

Phone + 47 67151200 | Fax +47 [email protected] | www.ellingsen.biz

Biffi Italia S.r.L. - Località Caselle S. Pietro - 29017 Fiorenzuola d’Arda (PC) - ITALYTel (0523) 944411 - Fax (0523) 941885 / 943923 / 944500

e_mail: [email protected]

Documents

“HLA” & HLAS HYDRAULIC ACTUATORS FOR LINEAR … HLA/HLAS Hydraulic Actuator © Copyright by BIFFI Italia. All rights reserved. A !"£$ INTERNATIONAL LTD COMPANY 3!"£$ flow control