Dresser Masoneilan VariPak 28000 Series Instructions Manual
  1. Manuals
  2. Brands
  3. Dresser Manuals
  4. Control Unit
  5. Masoneilan VariPak 28000 Series
  6. Instructions manual

Dresser Masoneilan VariPak 28000 Series Instructions Manual

Adjustable-cv microflow valve with actuator
Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
Masoneilan®
Instruction No.
Instruction Manual
EH 45004 E
for VariPak 28000 Series
05/2004
Adjustable-C
Microflow Valve with Actuator
v

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the Masoneilan VariPak 28000 Series and is the answer not in the manual?

Questions and answers

Related Manuals for Dresser Masoneilan VariPak 28000 Series

Summary of Contents for Dresser Masoneilan VariPak 28000 Series

  • Page 1 Masoneilan® Instruction No. Instruction Manual EH 45004 E for VariPak 28000 Series 05/2004 Adjustable-C Microflow Valve with Actuator...
  • Page 2 Instruction No. EH 45004 E 05/2004...

  • Page 3: Table Of Contents

    Instruction No. EH 45004 E 05/2004 Contents 1. - GENERAL ............4 1.1 - SPARE PARTS............4 1.2 - AFTER SALES DEPARTMENT ....... 4 1.3 - TRAINING ..............4 2. - OPERATION............ 5 2.1 - PRECISE ADJUSTMENT OF THE VARIPAK 28002 ADJUSTABLE-C VALVE......

  • Page 4: General

    Instruction No. EH 45004 E 05/2004 1. General These installation, operation, and maintenance instructions apply to Masoneilan VariPak* 28000 series control valves. They also include a parts reference list with recommended spare parts (see page 21). IMPORTANT REMARKS Before installing, operating, or performing maintenance on this equipment, you should read these instructions carefully and make sure you have understood them.

  • Page 5: Operation

    Instruction No. EH 45004 E 05/2004 For example, an application requiring a theoretical 2. Operation of 0.006 could be handled using a VariPak 28002 with a maximum C of 0.010, that can subsequently be calibrated on site between 0.004 and 0.010. The VariPak microflow control valve features a very wide range of rated flow coefficients (C ), from 0.004...
  • Page 6 Instruction No. EH 45004 E 05/2004 Plug and Plug and Plug and Plug and Plug and Plug and Plug and Plug and Plug and Plug and Clapet/siŁge Clapet/siŁge Clapet/siŁge Clapet/siŁge Clapet/siŁge Clapet/siŁge Clapet/siŁge Clapet/siŁge Clapet/siŁge Clapet/siŁge seat ring seat ring seat ring seat ring seat ring...

  • Page 7: Actuator

    Instruction No. EH 45004 E 05/2004 Follow procedure described Loosen adjustment knob (24) and slide it along "Disassembly/Reassembly" section the lever to the required value. Tighten the "Maintenance" chapter on pages 14 to 18. adjustment knob again firmly. Note: Also change the serial plate (135) or correct the information on the existing plate.

  • Page 8: Reversing The Valve Action

    Instruction No. EH 45004 E 05/2004 When the handwheel (120) is turned clockwise, the E. Remove retainer clips (112b) from pin (18), and stop (122) moves up the threaded rod, compressing remove the pin from lever (113) and plug clevis the spring (134) and raising lever No.
  • Page 9 Instruction No. EH 45004 E 05/2004 N. Put the valve back into service. Note: Ensure that the clevis is correctly positioned before fitting the lever No. 1 on the Note: bracket (108). - When replacing an Air-to-Close actuator with an J.

  • Page 10: Installation

    Instruction No. EH 45004 E 05/2004 Fit gaskets compatible with service conditions 3. Installation between the valve body and the pipe flanges. 3.1 PRELIMINARY STEPS A. Before installing the valve in the line, remove all traces of foreign material from the piping such as welding chips, scale, oil, grease, etc.

  • Page 11: Pneumatic And Electrical Circuit

    Instruction No. EH 45004 E 05/2004 Insulation: If the valve is to be insulated, ensure that the insulation does not exceed the shaded area shown in figure 10 below. Electrical 1/4" NPT supply 1/8" NPT 1 /8 NPT Connexion Alimentation connection signal connection...

  • Page 12: Calibration

    Instruction No. EH 45004 E 05/2004 VariPak 28002 adjustable-C valve (Figures 4. Calibration 14 and 27) This adjustment is only required if the piston VariPak valves are factory-calibrated according to (131) has been removed. the components specified in the customer order. If for any reason this calibration has been disturbed In this case, it should be carried out during (e.g.

  • Page 13: Limit Stop Adjustment

    Instruction No. EH 45004 E 05/2004 B. Fit lever (113) with spring clamp (115) At this closing point where the plug is not positioning hole facing upwards, fit pin (105) into tightened onto the seating, the slides of hole A, then fit pin (18) into clevis (104a). levers No.

  • Page 14: Varipak 28002 Cadjustment

    Instruction No. EH 45004 E 05/2004 4.4 VARIPAK 28002 C ADJUSTMENT pressure connection nuts (138a). Check that all connections are leaktight. This adjustment is carried out by moving adjustment knob (24) along adjustment plate (25) fastened to the top of lever No. 1 (21). See section “Adjusting the C of a Varipak 28002 valve for each plug and seat ring combination”, page 7.

  • Page 15: Disassembly

    Instruction No. EH 45004 E 05/2004 5.3 DISASSEMBLY (Figures 5, 24, 25, D. Completely loosen locknut (117) and screw (116). Remove spring clamp (115) from lever No. 26, 27, 28 and 29) 2 and remove balance spring (114) from the positioner.

  • Page 16: Reassembly

    Instruction No. EH 45004 E 05/2004 - VariPak valves with C max. 3.8 do not have seat- ring gaskets (2). 5.4 REASSEMBLY (Figures 5, 15, 19, 20, 24, 25, 26, 27, 28 and 29) Before reassembly, thoroughly clean the inside of the valve body and parts, paying particular attention to gasket seating surfaces and contact surfaces.
  • Page 17 Instruction No. EH 45004 E 05/2004 Reassembly procedure for the VariPak 28002 1.5 mm 1,5 mm adjustable-C valve (continued): H. Couple lever No. 2 (22) to the actuator bracket (108) using pin (18). Ensure that the hole in lever No. 2 where spring clamp (115) is fitted is located above and in line with balance spring (114).

  • Page 18: Packing Quick Change Method (Only For Valves With Max. Cof 0.6 To 3.8)

    Instruction No. EH 45004 E 05/2004 N. Admit the signal and supply pressure and B. Remove safety pin (11) from the valve body. The safety pin stub engages with the hole in packing complete calibration. Refit cover (110) using the spacer (5).

  • Page 19: Maintenance Operations Specific To The 7700E Positioner

    Instruction No. EH 45004 E 05/2004 B. Loosen the two cap screws (141a) and remove H. Fit O-ring (153), shims (145), pilot valve assembly, gasket (146) and its three O-rings, manifold block (144), spring (158), gasket (146) spring (158) and manifold block (144). Tighten and its three O-rings, pilot valve assembly (155 the screws (141a), refit tubing (140) and tighten to 157), shims (145), and O-ring (153).

  • Page 20: Converting A 7700P Positioner (Pneumatic) Into A 7700E Positioner (Electro-Pneumatic)

    Instruction No. EH 45004 E 05/2004 5.8 CONVERTING A 7700P C. If the parts mentioned above have been removed, proceed as follows: POSITIONER (PNEUMATIC) INTO A 7700E POSITIONER (ELECTRO- Fit the O-ring (153), shims (145), pilot valve assembly (155 to 157), gasket (146) and the PNEUMATIC) three O-rings, the spring (158) and manifold A kit comprising the manifold block (144) and the I/P...
  • Page 21 Instruction No. EH 45004 E 05/2004 112c 156 S/A & 141a 138a Figure 24 - Cross-section of the VariPak 28002 adjustable-C actuator and the 7700P positioner PARTS LIST Ref. Part Name Ref. Part Name Ref. Part Name 1/4" NPT pipe plug Grommet support plate Tubing Seat-ring gasket...
  • Page 22 Instruction No. EH 45004 E 05/2004 112c 156 S/A 141a Figure 25 - Cross-section of the VariPak 138a 28001 single-lever actuator and the 7700E positioner 144 147 145 138 & 112b 124 112c 112a 104a 104b 138a 142 141b 138a 137 Figure 26 - Partial cross-section of VariPak 28001 single-lever, air-to-open valve...
  • Page 23 Instruction No. EH 45004 E 05/2004 112c 112a 104a 104b 138a 141b 138a 112 a 112 b Lever No. 1 Levier n 1 Figure 27 -Partial cross-section of VariPak 28002 Pin No. 1 Axe n 1 adjustable-C , air-to-open valve Pin No.
  • Page 24 Fax : 82-2-274-0794 Telephone : 1-905-335-3529 Telephone : 971-4-838-752 Fax : 1-905-336-7628 Fax : 971-4-838-038 KUWAIT Dresser Valve Division - Middle East Operations Alberta Mailing adress : Dresser Canada, Inc. P.O. Box 242 Units Nos JAO1 + JAO2 Valve Division...

This manual is also suitable for:

Masoneilan varipak 28001

Table of Contents