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We offer two designs for manhole risers, plus utility lid risers for gas, water, sewer, electrical and telephone valves.

Just a short note to thank you for the way your company handles our orders for your product. Your quality, competitive price, and prompt shipment makes a combination that is hard to beat.

The quality of your manhole risers is appreciated by our personnel and also the water and sewer departments of the municipalities. Your willingness to work with us is greatly appreciated, we thank you.

Jeff Chapman
Des Moines Asphalt

The Manhole Adjustable Riser Company manhole riser is a patented system of interlocking cast-iron sections which bolt together to form a custom-size manhole frame which fits into the original ring and raises the manhole cover to the level of the new street surface.

Manhole Adjustable Riser Company specializes in:

  • Short runs (1 to 100 risers per run)
  • All sizes (17" to 48" in diameter with 1" and up rise)
  • On-time delivery (in 4 days or less in emergency)

Our manhole risers come fully assembled for easy installation and are shipped promptly to cut down lead time and costs.

Material: Cast Iron/Grade 30; Weight: 40-80 pounds depending on specifications.

Manhole Risers

Design #1

The riser used when overlaying thickness exceeds the lid thickness by " or more.

Design #2

Vertically adjustable. The riser used when lid thickness equals or exceeds the overlay thickness.

adjustable manhole riser figure with measurements adjustable manhole frame figure with measurements

Simplified Pricing:

Just measure the lid diameter to compute the cost.

$7.00

per diameter inch
Example: 22" lid x $7.00 = $154.00

Simplified Pricing:

Just measure the lid diameter to compute the cost.

$7.50

per diameter inch
Example: 22" lid x $7.50 = $165.00

Utility Risers

GAS VALVE RISER
Pattern #55

Custom-size rings accommodate valve riser lids 5" in diameter

gas valve and riser figure

Pattern #55 valve riser ring sections have 2.7" radius, 1" matt and 2" lid thickness. NOTE: Resurfacing depth (matt) of all gas and water valve riser rings can be shimmed.

WATER VALVE RISER
Pattern # 67

Custom-size rings accommodate valve riser lids from 6 3/4" to 7 3/8" in diameter

water valve and riser figure

Pattern #67 valve riser ring sections have 3" radius, 1" matt and 2" lid thickness. Diameter of lid can vary from 6 3/4" to 7 3/8".

WATER VALVE RISER
Patterns #89 and #910

Custom-size rings accommodate valve riser lids from 8" to 10" in diameter

water valve and riser figure

Valve riser ring sections have radius of 4.5" (#89) and 4.7" (#910). Both have 1" matt and " lid thickness. Diameter of lid can vary from 8" to 10".