Boiler Handhole & Manhole Plates Boiler Handhole & Manhole Plates by Size Stainless Steel Boiler Handhole and Manhole Plates
304 stainless steel is the most common form of stainless steel used around the world, largely due to its excellent corrosion resistance and value. It contains between 16 and 24 percent chromium and up to 35 percent nickel, as well as small amounts of carbon and manganese.
316 stainless steel is the second-most common form of stainless steel. It has almost the same physical and mechanical properties as 304 stainless steel, and contains a similar material make-up. The key difference is that 316 stainless steel incorporates about 2 to 3 percent molybdenum. The addition increases corrosion resistance, particularly against chlorides and other industrial solvents.
All manholes are furnished with a neoprene gasket rated from -20°F to 170°F. (-29°C to 76°)
Complete Top assemblies consist of:
**Note Complete Top Assembly DOES NOT include weld ring for a new job installation for a vessel.**
| Part # | Size | Pressure Rating | |
|---|---|---|---|
| T-304-SS-3-S | 3" x 4" w/ Stud | 500 PSI | Add to RFQ |
| T-304-SS-4-S | 4" x 6" w/ Stud | 500 PSI | Add to RFQ |
| T-304-SS-6-C | 6" x 8" W/ Clip | 500 PSI | Add to RFQ |
| T-316-SS-3-S | 3" x 4" w/ Stud | 500 PSI | Add to RFQ |
| T-316-SS-4-S | 4" x 6" w/ Stud | 500 PSI | Add to RFQ |
| T-316-SS-6-C | 6" x 8" w/ Clip | 500 PSI | Add to RFQ |
THESE SIZES ARE NOT AVAILABLE WITH STUD STYLE
Complete Top assemblies consist of :
**Note Complete Top Assembly DOES NOT include weld ring for a new job installation for a vessel.**
| Part # | Size | Pressure Rating | |
|---|---|---|---|
| T-304-SS-11-300-C | 11" x 15" w/Clips | 300 PSI | Add to RFQ |
| T-304-SS-11-600-C | 11" x 15" w/Clips | 600 PSI | Add to RFQ |
| T-304-SS-12-300-C | 12" x 16" w/Clips | 300 PSI | Add to RFQ |
| T-304-SS-12-600-C | 12" x 16" w/Clips | 600 PSI | Add to RFQ |
| T-304-SS-14-300-C | 14" x 18" w/Clips | 300 PSI | Add to RFQ |
| T-304-SS-14-600-C | 14" x 18" w/Clips | 600 PSI | Add to RFQ |
| T-304-SS-18-200-C | 18" x 24" w/Clips | 200 PSI | Add to RFQ |
| T-316-SS-11-300-C | 11" x 15" w/Clips | 300 PSI | Add to RFQ |
| T-316-SS-11-600-C | 11" x 15" w/Clips | 600 PSI | Add to RFQ |
| T-316-SS-12-300-C | 12" x 16" w/Clips | 300 PSI | Add to RFQ |
| T-316-SS-12-600-C | 12" x 16" w/Clips | 600 PSI | Add to RFQ |
| T-316-SS-14-300-C | 14" x 18" w/Clips | 300 PSI | Add to RFQ |
| T-316-SS-14-600-C | 14" x 18" w/Clips | 600 PSI | Add to RFQ |
| T-316-SS-18-200-C | 18" x 24" w/Clips | 200 PSI | Add to RFQ |
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