Alfa Laval 761 Series Instruction Manual
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Alfa Laval 761 Series Instruction Manual

Air-actuated valves
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Instruction Manual
Series 741, 761, 762 & 771 Air-Actuated Valves
ESE03384-ENUS2
Original manual
1810

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Summary of Contents for Alfa Laval 761 Series

  • Page 1 Instruction Manual Series 741, 761, 762 & 771 Air-Actuated Valves ESE03384-ENUS2 1810 Original manual...

  • Page 3: Table Of Contents

    Table of contents The information herein is correct at the time of issue but may be subject to change without prior notice 1. Safety ....................1.1. Important information ................2. Introduction .................... 2.1. About this manual ................3. Maintenance ................... 3.1.

  • Page 4: Safety

    1.1 Important information Safety is very important! DO NOT attempt to modify any Alfa Laval product. To do so could create unsafe conditions and void all warranties. DO NOT place any Tri-Clover product in an application where general product service ratings are exceeded.

  • Page 5: Introduction

    2 Introduction 2.1 About this manual This manual is for standard valve assemblies and actuators. A separate service manual is available for the control top module option. All 700 series valves are compatible with the optional control top module that can provide valve position feedback with limit switches or proximity sensors, and an integrally mounted solenoid air control valve.
  • Page 6 General Information - 761/741 SHUT OFF DIVERT REVERSE ACTING SHUT OFF Series 761 Available Valve Styles Each Alfa Laval Inc. Air-Actuated Valve is identified by a model number. The model number consists of five groupings or coding as shown below:...
  • Page 7 2 Introduction General Information - 771 THROTTLING Series 761 Available Valve Styles Each Tri-Clover Air-Actuated Valve is identified by a model number. The model number consists of five groupings or coding as shown below: Sample Valve Part Number: 771S - 10M - - 316L 1 Valve Series 771S...
  • Page 8 2 Introduction General Information - 762 KETTLE • TANK OUTLET • TANGENTIAL Series 762 Available Valve Styles Each Tri-Clover Air-Actuated Valve is identified by a model number. The model number consists of five groupings or coding as shown below: Sample Valve Part Number: 762 - 31M - 20L - 2 - 316L 1 Valve Series...
  • Page 9 2 Introduction General Information - 761 Y-BODY Series 761 Available Valve Styles Each Tri-Clover Air-Actuated Valve is identified by a model number. The model number consists of five groupings or coding as shown below: Sample Valve Part Number: 761 - 90M - 20L - 2 - 316L 1 Valve Series Molded rubber seat(s)

  • Page 10: Maintenance

    THE C137 LUBRICANT IS NOT INTENDED FOR USE ON VALVE STEM SEALS, BODY GASKET OR ANY PRODUCT CONTACT SURFACE. Alfa Laval offers C137 in 1 ounce tubes. For further information refer to your Actuator Service Bulletin, or contact your Alfa Laval distributor.
  • Page 11 3 Maintenance Always use Alfa Laval genuine spare parts. DIVERT, ELBOW & KETTLE Apply 60 psig air to the end cap. This will extend the plug away from the valve seat. Stem Separate the valve stem from the actuator stem. This is done by placing an open end Flats wrench around the valve stem flats and then turning counter clockwise.

  • Page 12: Valve Component Inspection

    3 Maintenance Always use Alfa Laval genuine spare parts. 3.2 Valve Component Inspection VALVE BODY SEAT(s) Inspect for nicks and scratches and other signs of excessive wear. Leakage past the seat(s) may result from these types of irregularities. VALVE STEM & SEAT(S) Inspect rubber or PTFE seat(s) for signs of cracking, tearing, checking, or excessive wear.

  • Page 13: Valve Assembly

    3 Maintenance Always use Alfa Laval genuine spare parts. 3.3 Valve Assembly CAUTION To prevent personal injury, keep hands and tools out of and away from valve bodies and stems when applying or releasing air to an actuator. The actuator stem assembly moves with extreme force and suddenness.

  • Page 14: Tr And Tr2 Stem/Seat Assembly

    INSTALLATION OF REPLACEMENT PTFE SNAP-ON SEAT The Alfa Laval replacement Snap-On Seats do not require heat or special tools for proper installation. Snap-On Seats are installed by applying uniform pressure on all sides. Pressure can be applied by using a Tri- Clamp or Bevel Seat ferrule the same size as the valve.

  • Page 15: Type 10, 20, And 30 Actuator

    3 Maintenance Always use Alfa Laval genuine spare parts. 3.5 Type 10, 20, and 30 Actuator INTRODUCTION This section covers servicing of the following actuators: Type 10L - 10S (normally open), Type 20L - 20S (Normally Closed) Long and Short, and Type 30L - 30S (Air Both Ways).
  • Page 16 3 Maintenance Always use Alfa Laval genuine spare parts. Step 2 Apply 60 psig air to end cap. The packing and bushing will be forced out of their counter bores, which will result in an air leak. Step 3 Remove air supply once the bushing and packing are forced out.

  • Page 17: Type 80 Actuator

    3 Maintenance Always use Alfa Laval genuine spare parts. 3.6 Type 80 Actuator INTRODUCTION Type 80 is a three position actuator that will require minimum maintenance. It is similar to the Type 10 & 20 spring return actuators except for a mid position adjustment assembly. Installation, adjustment, maintenance, partial disassembly, and assembly instructions are covered below.

  • Page 18: Type 15 And 25 Actuator

    3 Maintenance Always use Alfa Laval genuine spare parts. Disassembly Step 1 Separate adjustment knob and cover plate by removing four bolts. Step 2 Remove E-ring and unscrew adjustment nut from actuator stem completely. Step 3 Remove spacer, end cap, bushing, retainer, and o-ring from actuator.
  • Page 19 3 Maintenance Always use Alfa Laval genuine spare parts. Step 2 Assemble the yoke to the actuator without the green bushing retainer. Assemble the valve stem to the actuator stem. CAUTION To prevent personal injury, DO NOT attempt to remove the packing and bushing without the valve stem threaded onto the actuator stem.
  • Page 20 3 Maintenance Always use Alfa Laval genuine spare parts. BUSHING / PACKING REPLACEMENT, NYLON LOCK REPLACEMENT AND LUBRICATION IMPORTANT: The TYPE 15/25 actuator does not have a red indicating cap like the type 10, 20 or 30 actuator. Cover the actuator stem threads with tape to protect the new bushing and packing from damage during assembly.
  • Page 21 3 Maintenance Always use Alfa Laval genuine spare parts. ASSEMBLY Step 1 Clamp the Inner Diaphragm Guide in a vise with its threaded stud facing upward. Step 2 Set the diaphragm into the Inner Guide, set the Inner Diaphragm Clamp inside the diaphragm, screw on the Nut until hand tight.

  • Page 22: Spare Parts

    4 Spare Parts Always use Alfa Laval genuine spare parts. The warranty of Alfa Laval products is dependent on the use of Alfa Laval genuine spare parts. 4.1 741/761 Divert Valve...
  • Page 23 4 Spare Parts Always use Alfa Laval genuine spare parts. The warranty of Alfa Laval products is dependent on the use of Alfa Laval genuine spare parts. Parts list Pos. Denomination Actuator Mid position actuator/short actuator, short 1HPL HP actuator,long...

  • Page 24: 741/761 Shut Off Valve

    4 Spare Parts Always use Alfa Laval genuine spare parts. The warranty of Alfa Laval products is dependent on the use of Alfa Laval genuine spare parts. 4.2 741/761 Shut Off Valve...
  • Page 25 4 Spare Parts Always use Alfa Laval genuine spare parts. The warranty of Alfa Laval products is dependent on the use of Alfa Laval genuine spare parts. Parts list Pos. Denomination 1 Mid position actuator, short Actuator Actuator 1HPL HP actuator, long...

  • Page 26: 761 Reverse-Acting Valve

    4 Spare Parts Always use Alfa Laval genuine spare parts. The warranty of Alfa Laval products is dependent on the use of Alfa Laval genuine spare parts. 4.3 761 Reverse-Acting Valve...
  • Page 27 4 Spare Parts Always use Alfa Laval genuine spare parts. The warranty of Alfa Laval products is dependent on the use of Alfa Laval genuine spare parts. Parts list Pos. Denomination 10/20 actuator, long Mid position actuator/short 10/20 actuator, short...

  • Page 28: 761 Y-Body Valve

    4 Spare Parts Always use Alfa Laval genuine spare parts. The warranty of Alfa Laval products is dependent on the use of Alfa Laval genuine spare parts. 4.4 761 Y-Body Valve 4 and 5 4 and 5 11 (12 if 4")
  • Page 29 4 Spare Parts Always use Alfa Laval genuine spare parts. The warranty of Alfa Laval products is dependent on the use of Alfa Laval genuine spare parts. Parts list Pos. Denomination Actuator n/c Air to air Stem protector O-ring Spacer...

  • Page 30: 762 Kettle Valve

    4 Spare Parts Always use Alfa Laval genuine spare parts. The warranty of Alfa Laval products is dependent on the use of Alfa Laval genuine spare parts. 4.5 762 Kettle Valve 4" only 2L or 2S 4, 5 and 1L or 1S...
  • Page 31 4 Spare Parts Always use Alfa Laval genuine spare parts. The warranty of Alfa Laval products is dependent on the use of Alfa Laval genuine spare parts. Parts list Pos. Denomination Actuator long Stem protector long 4" Stem protector o-ring 4"...
  • Page 32 4 Spare Parts Always use Alfa Laval genuine spare parts. The warranty of Alfa Laval products is dependent on the use of Alfa Laval genuine spare parts. Service kits Denomination 2” 2 1/2” 3” 4” Service Kits 29, 33 ...

  • Page 33: 762 Tank Outlet Valve

    4 Spare Parts Always use Alfa Laval genuine spare parts. The warranty of Alfa Laval products is dependent on the use of Alfa Laval genuine spare parts. 4.6 762 Tank Outlet Valve...
  • Page 34 4 Spare Parts Always use Alfa Laval genuine spare parts. The warranty of Alfa Laval products is dependent on the use of Alfa Laval genuine spare parts. Parts list Pos. Denomination Actuator long 21,22,57,58 Actuator long 13 & 123 Actuator short Stem protector long 4"...
  • Page 35 4 Spare Parts Always use Alfa Laval genuine spare parts. The warranty of Alfa Laval products is dependent on the use of Alfa Laval genuine spare parts. Service kits Denomination 2” 2 1/2” 3” 4” Service kits 21, 22, 57, 58 ...

  • Page 36: 762 Tangential Valve

    4 Spare Parts Always use Alfa Laval genuine spare parts. The warranty of Alfa Laval products is dependent on the use of Alfa Laval genuine spare parts. 4.7 762 Tangential Valve 4" only 2L or 2S 4, 5 and 1L or 1S...
  • Page 37 4 Spare Parts Always use Alfa Laval genuine spare parts. The warranty of Alfa Laval products is dependent on the use of Alfa Laval genuine spare parts. Parts list Pos. Denomination Actuator long Actuator short Stem protector long 4" Stem protector ring 4"...

  • Page 38: 771S Divert Valve

    4 Spare Parts Always use Alfa Laval genuine spare parts. The warranty of Alfa Laval products is dependent on the use of Alfa Laval genuine spare parts. 4.8 771S Divert Valve...
  • Page 39 4 Spare Parts Always use Alfa Laval genuine spare parts. The warranty of Alfa Laval products is dependent on the use of Alfa Laval genuine spare parts. Parts list Pos. Denomination Diaphragm actuator 10/20 actuator, short Stem protector,short Yoke, short Seal retainer ...

  • Page 40: 771S Reverse-Acting Valve

    4 Spare Parts Always use Alfa Laval genuine spare parts. The warranty of Alfa Laval products is dependent on the use of Alfa Laval genuine spare parts. 4.9 771S Reverse-Acting Valve...
  • Page 41 4 Spare Parts Always use Alfa Laval genuine spare parts. The warranty of Alfa Laval products is dependent on the use of Alfa Laval genuine spare parts. Parts list Pos. Denomination Diaphragm actuator 10/20 actuator, shor Stem protector,short Yoke,short Seal retainer Vee packing ...

  • Page 42: 771S Throttling Valve

    4 Spare Parts Always use Alfa Laval genuine spare parts. The warranty of Alfa Laval products is dependent on the use of Alfa Laval genuine spare parts. 4.10 771S Throttling Valve...
  • Page 43 4 Spare Parts Always use Alfa Laval genuine spare parts. The warranty of Alfa Laval products is dependent on the use of Alfa Laval genuine spare parts. Parts list Pos. Denomination Positioner & adapter 14p Positioner & adapter 24p Diaphragm actuator 15...

  • Page 44: Type 15 25 Valve Actuators

    4 Spare Parts Always use Alfa Laval genuine spare parts. The warranty of Alfa Laval products is dependent on the use of Alfa Laval genuine spare parts. 4.11 Type 15 25 Valve Actuators...
  • Page 45 4 Spare Parts Always use Alfa Laval genuine spare parts. The warranty of Alfa Laval products is dependent on the use of Alfa Laval genuine spare parts. Parts list Pos. Denomination Coupler  Gasket Sealing nut Cylinder Outer diaphragm clamp Body insert ...

  • Page 46: Diaphragm Actuators With Siemens Positioner 771S Series 1

    4 Spare Parts Always use Alfa Laval genuine spare parts. The warranty of Alfa Laval products is dependent on the use of Alfa Laval genuine spare parts. 4.12 Diaphragm Actuators with Siemens Positioner 771S Series 1”...
  • Page 47 4 Spare Parts Always use Alfa Laval genuine spare parts. The warranty of Alfa Laval products is dependent on the use of Alfa Laval genuine spare parts. Parts list Pos. Denomination Moore Positioner Range Spring Mounting Adapter Gasket Outer Diaphragm Clamp...

  • Page 48: Diaphragm Actuators With Siemens Positioner 771 1-1/2" To 3" Valves

    4 Spare Parts Always use Alfa Laval genuine spare parts. The warranty of Alfa Laval products is dependent on the use of Alfa Laval genuine spare parts. 4.13 Diaphragm Actuators with Siemens Positioner 771 1-1/2” to 3” Valves...
  • Page 49 4 Spare Parts Always use Alfa Laval genuine spare parts. The warranty of Alfa Laval products is dependent on the use of Alfa Laval genuine spare parts. Parts list Pos. Denomination Moore Positioner Range Spring Mounting Adapter Gasket Outer Diaphragm Clamp...

  • Page 50: 736-X Swap Valve Short Stroke Stems

    4 Spare Parts Always use Alfa Laval genuine spare parts. The warranty of Alfa Laval products is dependent on the use of Alfa Laval genuine spare parts. 4.14 736-X Swap Valve Short Stroke Stems...
  • Page 51 4 Spare Parts Always use Alfa Laval genuine spare parts. The warranty of Alfa Laval products is dependent on the use of Alfa Laval genuine spare parts. Parts list Pos. Denomination ADAPTER BONNET -761 TO 361 CAPLUG#5/8 YOKE BODY CLAMP O-RING USF ...

  • Page 52: 736-X Swap Valve Long Stroke Stems

    4 Spare Parts Always use Alfa Laval genuine spare parts. The warranty of Alfa Laval products is dependent on the use of Alfa Laval genuine spare parts. 4.15 736-X Swap Valve Long Stroke Stems...
  • Page 53 4 Spare Parts Always use Alfa Laval genuine spare parts. The warranty of Alfa Laval products is dependent on the use of Alfa Laval genuine spare parts. Parts list Pos. Denomination ADAPTER BONNET -761 TO 361 CAPLUG#5/8 YOKE BODY CLAMP O-RING USF ...

  • Page 54: 736Tr-X Swap Valve Short Stroke Stems

    4 Spare Parts Always use Alfa Laval genuine spare parts. The warranty of Alfa Laval products is dependent on the use of Alfa Laval genuine spare parts. 4.16 736TR-X Swap Valve Short Stroke Stems...
  • Page 55 4 Spare Parts Always use Alfa Laval genuine spare parts. The warranty of Alfa Laval products is dependent on the use of Alfa Laval genuine spare parts. Parts list Pos. Denomination ADAPTER BONNET -761 TO 361 CAPLUG#5/8 YOKE BODY CLAMP O-RING USF ...

  • Page 56: 736Tr-X Swap Valve Long Stroke Stems

    4 Spare Parts Always use Alfa Laval genuine spare parts. The warranty of Alfa Laval products is dependent on the use of Alfa Laval genuine spare parts. 4.17 736TR-X Swap Valve Long Stroke Stems...
  • Page 57 4 Spare Parts Always use Alfa Laval genuine spare parts. The warranty of Alfa Laval products is dependent on the use of Alfa Laval genuine spare parts. Parts list Pos. Denomination ADAPTER BONNET -761 TO 361 CAPLUG#5/8 YOKE BODY CLAMP O-RING USF ...

  • Page 58: 736Tr2-X Swap Valve Short Stroke Stems

    4 Spare Parts Always use Alfa Laval genuine spare parts. The warranty of Alfa Laval products is dependent on the use of Alfa Laval genuine spare parts. 4.18 736TR2-X Swap Valve Short Stroke Stems...
  • Page 59 4 Spare Parts Always use Alfa Laval genuine spare parts. The warranty of Alfa Laval products is dependent on the use of Alfa Laval genuine spare parts. Parts list Pos. Denomination ADAPTER BONNET -761 TO 361 CAPLUG#5/8 YOKE BODY CLAMP O-RING USF ...

  • Page 60: 736Tr2-X Swap Valve Long Stroke Stems

    4 Spare Parts Always use Alfa Laval genuine spare parts. The warranty of Alfa Laval products is dependent on the use of Alfa Laval genuine spare parts. 4.19 736TR2-X Swap Valve Long Stroke Stems...
  • Page 61 4 Spare Parts Always use Alfa Laval genuine spare parts. The warranty of Alfa Laval products is dependent on the use of Alfa Laval genuine spare parts. Parts list Pos. Denomination ADAPTER BONNET -761 TO 361 CAPLUG#5/8 YOKE BODY CLAMP O-RING USF ...

  • Page 62: Spares Dimensions

    5 Spares Dimensions Always use Alfa Laval genuine spare parts. The warranty of Alfa Laval products is dependent on the use of Alfa Laval genuine spare parts. 5.1 Tank and Kettle Valve Flange, Ferrule, Tank Pods Dimensions and Part Numbers...
  • Page 63 5 Spares Dimensions Always use Alfa Laval genuine spare parts. The warranty of Alfa Laval products is dependent on the use of Alfa Laval genuine spare parts. Tank Pods for Kettle Valves Dimensions “E” 1/16 DIA REF. “D” DIA REF.
  • Page 64 5 Spares Dimensions Always use Alfa Laval genuine spare parts. The warranty of Alfa Laval products is dependent on the use of Alfa Laval genuine spare parts. Size 32-82 and 32-84 Valve Size (in) 4.20 3.31 4.25 4.50 5.87 4.84 5.78...

  • Page 65: Actuators

    Parts list Pos. Denomination 5.3 761/741 TR Shut-Off TR/TR2 Stems TR2 Plug TR Plug Dimensions are approximate and are intended to aid in identification only. For more information, contact Alfa Laval, Inc. Part Number (19TR/TR2) Series Size 1 1/2 19TR-1254-1 1/2-316L...
  • Page 66 5 Spares Dimensions Always use Alfa Laval genuine spare parts. The warranty of Alfa Laval products is dependent on the use of Alfa Laval genuine spare parts. TR2 Plug TR Plug...
  • Page 67 5 Spares Dimensions Always use Alfa Laval genuine spare parts. The warranty of Alfa Laval products is dependent on the use of Alfa Laval genuine spare parts. Part Number Series Size (19TR/TR2) 1 1/2 19TR-1276-1 1/2-316L 9 5/16 5 3/16...
  • Page 68 5 Spares Dimensions Always use Alfa Laval genuine spare parts. The warranty of Alfa Laval products is dependent on the use of Alfa Laval genuine spare parts. TR2 Plug TR Plug...
  • Page 69 5 Spares Dimensions Always use Alfa Laval genuine spare parts. The warranty of Alfa Laval products is dependent on the use of Alfa Laval genuine spare parts. Part Number (19TR/TR2) Series Size 19TR-1306-2-316L 6 59/64 6 15/32 2 1/16 2 1/2...

  • Page 70: 700/800 Lp Shut-Off Stems

    The warranty of Alfa Laval products is dependent on the use of Alfa Laval genuine spare parts. 5.4 700/800 LP Shut-Off Stems Dimensions are approximate and are intended to aid in identification only. For more information, contact Alfa Laval, Inc. Series...

  • Page 71: 700/800 Spherical Shut-Off Stems (Replaced By "Lp" Stems)

    5 Spares Dimensions Always use Alfa Laval genuine spare parts. The warranty of Alfa Laval products is dependent on the use of Alfa Laval genuine spare parts. 5.5 700/800 Spherical Shut-Off Stems (replaced by “LP” stems) Dimensions are approximate and are intended to aid in identification only. For more information,contact Alfa Laval, Inc.

  • Page 72: 700/800 Spherical Stems (Replaced By "Lp" Stems)

    5 Spares Dimensions Always use Alfa Laval genuine spare parts. The warranty of Alfa Laval products is dependent on the use of Alfa Laval genuine spare parts. 5.6 700/800 Spherical Stems (Replaced by “LP” stems) Series Size Part Number 1 1/2...
  • Page 73 5 Spares Dimensions Always use Alfa Laval genuine spare parts. The warranty of Alfa Laval products is dependent on the use of Alfa Laval genuine spare parts.

  • Page 74: 700 Ra "Lp" Stems

    5 Spares Dimensions Always use Alfa Laval genuine spare parts. The warranty of Alfa Laval products is dependent on the use of Alfa Laval genuine spare parts. 5.7 700 RA “LP” Stems Series Size Part Number 19-1306-2-316L 6 59/64 6 15/32...
  • Page 75 5 Spares Dimensions Always use Alfa Laval genuine spare parts. The warranty of Alfa Laval products is dependent on the use of Alfa Laval genuine spare parts.

  • Page 76: 700/800 Lp Divert Stems

    5 Spares Dimensions Always use Alfa Laval genuine spare parts. The warranty of Alfa Laval products is dependent on the use of Alfa Laval genuine spare parts. 5.8 700/800 LP Divert Stems...
  • Page 77 5 Spares Dimensions Always use Alfa Laval genuine spare parts. The warranty of Alfa Laval products is dependent on the use of Alfa Laval genuine spare parts. Series Size Part Number 1 1/2 19-1276-1 1/2-316L 8 55/64 6 29/32 1 11/16...
  • Page 78 5 Spares Dimensions Always use Alfa Laval genuine spare parts. The warranty of Alfa Laval products is dependent on the use of Alfa Laval genuine spare parts.

  • Page 79: 761/741 Spherical Divert Ls (Long Stroke) Stems

    5 Spares Dimensions Always use Alfa Laval genuine spare parts. The warranty of Alfa Laval products is dependent on the use of Alfa Laval genuine spare parts. 5.9 761/741 Spherical Divert LS (Long Stroke) Stems Dimensions are approximate and are intended to aid in identification only. For more information,contact Alfa Laval, Inc.

  • Page 80: Bonded Tr & Tr2 Kettle/Tank Outlet/Tangential Valve Stems

    The warranty of Alfa Laval products is dependent on the use of Alfa Laval genuine spare parts. 5.10 Bonded TR & TR2 Kettle/Tank Outlet/Tangential Valve Stems Dimensions are approximate and are intended to aid in identification only. For more information, contact Alfa Laval, Inc. Series...
  • Page 81 5 Spares Dimensions Always use Alfa Laval genuine spare parts. The warranty of Alfa Laval products is dependent on the use of Alfa Laval genuine spare parts.
  • Page 82 © Alfa Laval Corporate AB This document and its contents is owned by Alfa Laval Corporate AB and protected by laws governing intellectual property and thereto related rights. It is the responsibility of the user of this document to comply with all applicable intellectual property laws. Without limiting any rights related to this document, no part of this document may be copied, reproduced or transmitted in any form or by any means (electronic, mechanical, photocopying, recording, or otherwise), or for any purpose, without the expressed permission of Alfa Laval Corporate AB.

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