ELIPTICAL Hand Hole, and Man Ways

Vessel Lid

Covers Size in inches  Type

 Max PSI Rating

(depending on Design Temp)

2-3/4 x 3-5/8

Welded Stud/Radius

1000 psi

3-1/2 x 4-1/2

Welded Stud/Anchor

800 psi

4 x 6

Single bolt

1000 psi

6 x 8

Single bolt

660 psi

11 x 15

Double bolt

300 psi

12 x 16

Double bolt

900 psi

14 x 18

Double bolt

600 psi

18 x 24

Double bolt

200 psi


Carbon Filter Strainers are also available

Carbon Filter Strainers

Refurbish Worn Parts

Do not discard your worn assemblies or subassemblies!
SIGMA’s cost-effective refurbishment program can restore your equipment, extending its life for a fraction of the cost of replacing it with new equipment.

Contact Us Today


SIGMA’S Consultaion Service in the areas of Maintenance Managment, and Equipment Performance will improve reliability.
Give us a Call (732) 356-3046