CLA-VAL 790-01 Installation Operation & Maintenance Download Page 9

Liner Retainer Removal  2"-12" Sizes 

The 2" and 3" liner retainer is secured to the valve with an Allen

screw.  Loosen the Allen screw, pull the locking pin back towards

center of retainer, and remove the retainer from valve. 

To install, insert the retainer, (do not block inlet feed hole), push

locking pin into position and tighten Allen screw.  

The 4"-12" liner retainers are secured with a snap ring. Remove

the snap ring and retainer. 

To install, insert retainer and install snap ring into the groove of

valve. Be sure snap ring is completely inserted into groove. 

Liner Removal 2"-12" Sizes

The tool used for removal should be free of sharp edges to pre-

vent damage to the liner, the valve body seat or control cham-

ber surfaces. A motorcycle tire iron or similar tool works well. 

1.   Insert the tool between the liner and the valve body as 

deeply as possible. 

2.   Using the seat edge as a fulcrum, rock the end of the tool

away from the valve in a manner to pull the liner bead out of the

body. Grasp the liner and remove from the valve body. 

Liner Installation 2", 3", 4" Sizes

Thoroughly clean out the interior of the valve body control cham-

ber cavity. 

Liberally apply glycerine inside the control chamber cavity and

around the seal bead area of the liner. 

DO NOT USE ANY HYDROCARBON OR SILICONE BASED

LUBRICANTS ON LINERS AS THESE COMPOUNDS CAN

SEVERELY ATTACK THE LINER MATERIAL. 

3.   Fold the liner as shown and install into the valve body con-

trol chamber as deeply as possible.

4.   Continuing to force the liner into the control chamber cavity,

again fold the liner as shown to insert the liner seal bead section

under the valve body seat surface.

5.  Work the folded section of the liner into place by pushing

against the folded area to slide the seal bead down the conical

face of the control chamber. 

Liner Seating Instructions 2", 3", 4"  Sizes

After installing the liner, it must be seated over the manifold ring

in the valve body. The objective of this seating procedure is to

place the inside lip of the liner over the outside lip of the mani-

fold ring. 

6.   4" valve with liner installed.

7.   Pinch, pull and knead the liner 360° around to seat the liner

on the manifold ring. 

8.   Using a dull tool or hammer handle, pry the outer part of the

liner towards the center to help "seat" the liner. 

9.   Now push the liner down into the valve, holding your hand

on the depressed liner, seal off the loading port with your finger. 

10.  Remove your hand from liner and continue holding your fin-

ger over the loading port. If liner is seated, it will be held in the

open position as long as your finger is over the loading port.

When you release your finger, the liner will popup. If not seated,

repeat with Step 7. 

Install liner retainer into body.

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Distributed By: M&M Control Service, Inc.

                http://www.mmcontrol.com/claval-index.php

800-876-0036     847-356-0566

Summary of Contents for 790-01

Page 1: ...Distributed By M M Control Service INC Phone 800 876 0036 Fax 847 356 0747 Email Sales mmcontrol com Distributed By M M Control Service Inc http www mmcontrol com claval index php 800 876 0036 847 35...

Page 2: ...Distributed By M M Control Service Inc http www mmcontrol com claval index php 800 876 0036 847 356 0566...

Page 3: ...Distributed By M M Control Service Inc http www mmcontrol com claval index php 800 876 0036 847 356 0566...

Page 4: ...lower line pressure to a predetermined set point and shall maintain that set point regardless of variations in flow or inlet pressure Control valve shall be constructed of two parts a stainless steel...

Page 5: ...3 Fluid Being Handled 4 Fluid Temperature Range 5 Inlet Pressure Range 6 Outlet Pressure Range 7 Maximum Differential Pressure 8 Minimum Differential Pressure 9 Maximum Flow Rate 10 Pilot Set Point 2...

Page 6: ...e valve is fully opened when loading pressure is sufficiently reduced to allow the liner to roll back completely and expose the full slot area Restoring loading pressure reverses the liner rolling act...

Page 7: ...sed Install the valve between the flanges being sure to include the appropriate flange gas kets between each end of the valve and the mating pipe flange Note The valve must be installed with the flow...

Page 8: ...alve body 7 Use the hammer handle for the final insertion Sometimes it is helpful to beat on the liner with the hammer for the final step 8 To seat the liner on the manifold ring use the ham mer handl...

Page 9: ...COMPOUNDS CAN SEVERELY ATTACK THE LINER MATERIAL 3 Fold the liner as shown and install into the valve body con trol chamber as deeply as possible 4 Continuing to force the liner into the control cham...

Page 10: ...se of the CRD Pressure Reducing Pilot Control to fully relieve all loading on the range spring Slowly open the upstream main line block valve to pressurize the inlet sec tion of the valve Bleed any en...

Page 11: ...ended Pipe layout 6 12 Flange style 100 42 2 Pipe Coupling Rubber Gasket Type 1 100 42 Main Valve Flange X Flange Distributed By M M Control Service Inc http www mmcontrol com claval index php 800 876...

Page 12: ...TM 1 COUPLER FOR GROOVED PIPE 2 SPOOL STRAINER ASSEMBLY WITH CONE 3 100 42 MAIN VALVE GROOVE X FLANGE 4 100 42 MAIN VALVE GROOVE X GROOVE Recommended Pipe layout 6 12 Grooved style 100 42 Distributed...

Page 13: ...Stainless Steel Steel Cad Pl Steel Cad Pl Recommended Spare Part 4 Wafer Style Valve 2 3 Wafer Style Valve 6 12 Flanged Valve 6 5 5 1 2 3 4 5 6 4 3 2 8 7 1 When ordering please specify All nameplate d...

Page 14: ...Distributed By M M Control Service Inc http www mmcontrol com claval index php 800 876 0036 847 356 0566...

Page 15: ...Distributed By M M Control Service Inc http www mmcontrol com claval index php 800 876 0036 847 356 0566...

Page 16: ...assemble and reassemble properly refer to Reassembly Worn disc Disassemble remove and replace disc retainer assembly Yoke dragging on inlet nozzle Disassemble and reassemble properly refer to Reassemb...

Page 17: ...Hex Nut Diaphragm Washer Diaphragm Plug Body Gasket Plug Disc Retainer Assy 15 75 psi Disc Retainer Assy 30 300 psi Disc Retainer Assy 2 6 5 psi Disc Retainer Assy 2 30 psi Yoke Body 1 4 Seat Assy Bu...

Page 18: ...Distributed By M M Control Service Inc http www mmcontrol com claval index php 800 876 0036 847 356 0566...

Page 19: ...screen stock number 68373A All other parts available only in replacement assembly Standard 60 mesh pilot system strainer for fluid service PL X43 R 6 00 PARTS LIST Distributed By M M Control Service I...

Page 20: ...Distributed By M M Control Service Inc http www mmcontrol com claval index php 800 876 0036 847 356 0566...

Page 21: ...Check spring for visible distortion cracks and breaks Inspect all parts for damage corrosion and cleanliness CLEANING After disassembly and inspection cleaning of the parts can begin Water service usu...

Page 22: ...r Stamped on Side Description CV Flow Control Part Description Material ITEM DESCRIPTION QUAN 1 Cap SS only 1 2 Nut Jam 1 3 Seat 1 4 Gasket 1 5 Disc 1 6 Spring 1 7 Ring Retaining 1 8 Stem 1 9 O Ring 1...

Page 23: ...Distributed By M M Control Service Inc http www mmcontrol com claval index php 800 876 0036 847 356 0566...

Page 24: ...end details type of pilot controls used and control adjustment ranges Identification Plate For product identification cast in body markings are supplemented by the identification plate illustrated on...

Page 25: ...001407C R2002101A R2002102J R22002103G R2002104E R2002105A R2002106K R2002107H LINER PART NUMBERS 2 3 4 6 8 10 12 Natural Rubber 65 Durometer EPDM 70 Durometer Nitrile 70 Durometer Silicone 70 Duromet...

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