
Maintenance & Operating Instructions
For
4530SG & 4540SG Sight Glass Kit
Part Numbers:
4540SG-RK1 & 4540SGV-RK1
USA:
Dixon Bayco USA
Chestertown, Maryland
Phone: 410-778-2000
Fax: 410-778-4702
Toll Free: 800-355-1991
E-mail: dixonbayco@dixonvalve.com
www.dixonbayco.com
Canada:
Dixon Group Canada Limited
Innisfil (Barrie), Ontario
Phone: 705-436-1125
Fax: 705-436-6251
Toll Free: 877-963-4966
E-mail: isales@dixongroupcanada.com
www.dixongroupcanada.com
Mexico:
Dixva, S. de R.L. de C.V.
Monterrey, N.L
Phone: 01-800-00-DIXON (34966)
Fax: 01-81-8354-8197
E-mail: contactenos@dixonvalve.com.mx
www.dixonvalve.com
Europe:
Dixon Group Europe Ltd
Preston, England
Phone: +44 (0)1772 323529
Fax: +44 (0)1772 314664
E-mail: enquiries@dixoneurope.co.uk
www.dixoneurope.co.uk
Asia Pacific:
Dixon (Asia Pacific) Pty Ltd
Wingfield, South Australia
Phone: +61 8 8202 6000
Fax: +61 8 8202 6099
E-mail: enquiries@dixonvalve.com.au
www.dixonvalve.com.au
For Sales & Service Contact
090110 Rev1

4540SG / 4530SG SIGHT GLASS REPLACEMENT GUIDE
DISASSEMBLY
CAUTION: SAFETY GLASSES MUST BE WORN DURING DISASSEMBLY AND SERVICE.
Figure 1 - Tools required for maintenance and part replacement
1. Remove the retaining ring from assembly.
2. Drill two holes in the sight glass in the uppermost location
as shown in figure 2. Holes should be aligned
Figure 2 – Hole Drilling Location
090110 Rev1

3. It is recommended to apply penetrating oil to ease removal of the sight
glass.
4. Refer to figure 3-4 and insert the screw driver or round bar through the
holes and push down on the sight glass until it is free from the first
o-ring. Once the sight glass passes the first o-ring, push the sight glass
at the top portion of the adapter body with the screw driver.
See Figure 4.
5. After the sight glass and o-ring have been removed, thoroughly clean
the o-ring groove to remove any debris and penetrating oil.
Figure 3 – Sight glass removal
Figure 4 – Sight glass removal
090110 Rev1