Catalog

All 20" manholes include gasket, clamp ring and bolt, and working vent(s) unless otherwise noted.

Order weld collars separately.  We are a Full Line Betts Dealer. Please Contact Us for Items Not Listed.
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Unit of Measure
Items
16 in. & 20 in. Round Manholes

Manhole Inspection
Price $103.36
16 in. & 20 in Manhole NON-PAF

Manhole Non-PAF
Price $262.71
Manhole 20 in. PAF 406 Zinc Plated

Manhole PAF 406 Standard
Price $371.57
Manhole 20 in. Offset PAF 406 Zinc

Manhole PAF 406 Offset
Price $377.44
Description N/A
  • Easily installed
  • Low maintenance
  • Economical
Tiona Inspection Manholes provide quick, safe entrance and exit from your tanks. Heavy gauge metal and welded construction minimizes maintenance. Manholes are certified and marked in accordance with 49CFR178.345-5 with a test pressure of 36 psi [2.48 bar].

During installation and welding to the tank, care should be exercised to insure collars remain flat and round. If necessary, a welding fixture should be used to prevent distortion. 		N/A
  • Modern Design
  • Clean Lines
  • Low Cost
Combining all the features of all full 20" manhole opening for inspection PLUS the 10" fill cap, Tiona Model No. 8020 is a real 2-in-1 value, offering both inspection and loading features in one husky unit. We pay more for top quality material but furnish it as standard equipment at competitive prices. Secondary Latch is standard on all assemblies.

Manhole collars are available in aluminum, steel, and stainless steel. When welding collars to tank, exercise care to insure collar remains flat and round.

Note: Not legal for DOT specification tanks 		N/A
  • Integral relief valve/10" fill
  • Less than 1 Liter Leakage
  • Set Pressure Adjustment
  • Increased Flow Rate
  • Secondary Safety Latch
PAF manholes with integral latch style surge suppression relief valves are designed for use on DOT406 and replacement on MC306 specification cargo tanks. Manholes are certified and marked in accordance with 49CFR178.345-5 with a test pressure of 36 psig. Manhole covers are 7 gauge steel or stainless and are secured to the tank weld collar with a clamp ring and bolt which can be easily removed to provide access into the tank.

The integral 10" relief valve provides emergency pressure relief and meets the 1 liter surge leakage limit imposed by 49CFR178.345-10(b)(3)(ii). The relief valve also serves as a 10" latch style fill which can be easily opened to provide access for filling the tank or for inspection. Relief valves contain an adjustment feature to allow for fine-tuning of set pressure in the field. Other standard features include a heavy duty clamp ring, secondary safety latch and model 6496ALB pressure-vacuum vent mounted in the 10" relief valve cover.

Manholes are available with a self-latching feature that allows the 10" relief valve/fill cover to drop and securely latch upon movement of the tank if the cover is inadvertently left open. For self-latching model substitute L720 for L763 in assembly number.

Manhole collars are available in aluminum, steel, and stainless steel. When welding collars to tank, care should be exercised to insure collar remains flat and round. 		N/A
  • Integral relief valve/10" fill
  • Less than 1 Liter Leakage
  • Set Pressure Adjustment
  • Increased Flow Rate
  • Secondary Safety Latch
PAF manholes with integral latch style surge suppression relief valves are designed for use on DOT406 and replacement on MC306 specification cargo tanks. Manholes are certified and marked in accordance with 49CFR178.345-5 with a test pressure of 36 psig. Manhole covers are 7 gauge steel or stainless and are secured to the tank weld collar with a clamp ring and bolt which can be easily removed to provide access into the tank.

The integral 10" relief valve provides emergency pressure relief and meets the 1 liter surge leakage limit imposed by 49CFR178.345-10(b)(3)(ii). The relief valve also serves as a 10" latch style fill which can be easily opened to provide access for filling the tank or for inspection. Relief valves contain an adjustment feature to allow for fine-tuning of set pressure in the field. Other standard features include a heavy duty clamp ring, secondary safety latch and model 6496ALB pressure-vacuum vent mounted in the 10" relief valve cover.

Manholes are available with a self-latching feature that allows the 10" relief valve/fill cover to drop and securely latch upon movement of the tank if the cover is inadvertently left open. For self-latching model substitute L863 for L820 in assembly number.

Manhole collars are available in aluminum, steel, and stainless steel. When welding collars to tank, care should be exercised to insure collar remains flat and round.
Package Type N/A Each
Units Per Package N/A 1
Size N/A 20 "
Body Material N/A Plated Steel
Vendor Item # N/A 8008BXB N/A FVA8020BXB N/A PPVL720BXB N/A PPVL820BXB
Weight N/A 22 lb N/A 26.5 lb N/A 36 lb N/A 36 lb
Maintenance N/A Manhole assemblies should be inspected with sufficient frequency and due regard to the products carried to insure a liquid tight closure. Any worn, damaged or missing parts must be replaced. Gaskets should be replaced if their effectiveness is impaired in any way. Replacement gaskets must be compatible with products carried. N/A Manhole assemblies should be inspected with sufficient frequency and due regard to the products carried to insure a liquid tight closure. Any worn, damaged or missing parts must be replaced. Gaskets should be replaced if their effectiveness is impaired in any way. Replacement gaskets must be compatible with products carried. Adjustment due to gasket wear may be necessary to insure proper sealing of the 10" fill. A shim washer, item No. 4, is provided for this purpose. To increase the sealing force of the 10" fill, remove shim from location shown above and re-position it above fill cover No.1. N/A Manhole assemblies should be inspected with sufficient frequency to insure 10" Integral Relief Valve functions properly. Any worn, damaged or missing parts must be replaced. Gaskets should be replaced if their effectiveness to insure a liquid tight seal is impaired in any way. Replacement gaskets must be compatible with products carried. N/A Manhole assemblies should be inspected with sufficient frequency to insure 10" Integral Relief Valve functions properly. Any worn, damaged or missing parts must be replaced. Gaskets should be replaced if their effectiveness to insure a liquid tight seal is impaired in any way. Replacement gaskets must be compatible with products carried.
Warning N/A Use only genuine Betts Industries Inc. replacement parts. Substitute parts can impair the proper function of this product. N/A Use only genuine Betts Industries Inc. replacement parts. Use of substitute parts can impair the proper functioning of this product. N/A Consult PAF406-98 maintenance manual prior to disassembly of this relief valve.
Use only genuine Betts Industries Inc. replacement parts. Use of substitute parts can impair the proper functioning of this product. 		N/A Consult PAF406-98 maintenance manual prior to disassembly of this relief valve.
Use only genuine Betts Industries Inc. replacement parts. Use of substitute parts can impair the proper functioning of this product.
Qty Req'd for Discount N/A 4
% Discount at Checkout N/A 10 % N/A 5 % N/A 5 % N/A 5 %
Manufacturer N/A Betts