Quality Products For Professionals Since 1916 ISO9001:2015

Deflection Gauges For Pipeline Diameter Integrity

Pipeline Deflection Gauges, 938-96 Series

Pipeline Deflection Gauges, 938-96 Series

Steel Fixed Size and Aluminum Fin & Mandrel Deflection Gauges test flexible sewer pipe for out-of-roundness or deflection per ASTM specifications D3034 and F679.

  • Tests flexible pipe has been properly bedded and backfilled (ASTM D2321)
  • Sized to .01" both deflection gauge styles meet ASTM requirements.
  • 5% and & 7.5% Tolerance available
  • All sizes fit through standard 24" manhole
  • Nine-arm design ensures testing accuracy
  • Open design allows gravel and debris pass-through
  • Other gauges can get hung up - causing a deflection test to fail, even though the pipe is within tolerance
  • Custom sizes available

FILL OUT THIS ORDER FORM when ordering Deflection Gauges.

Deflection Gauge Chart

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Deflection Gauges - Fixed Steel Style

Fixed Steel Style Deflection Gauges

  • Durable, zinc-plated construction resists corrosion
  • Conforms to mandrel sizing specifications-blade length is equal to or greater than the nominal pipe size
  • Nine-arm design ensures testing accuracy
  • Open design allows gravel and debris pass-through

Deflection Gauge Steel

    Image Nominal Size Pipe Type Deflection Test Comment 1 Shipping Wt. Item Number Price Qty Action
    24" (609.6mm) SDR 35 5% Runner Length 18" (457.2mm) 21 Lb (9.53 Kg) 938-96124-355
    $871.50
    21" (533.4mm) SDR 35 5% Runner Length 18" (457.2mm) 18 Lb (8.16 Kg) 938-96121-355
    $770.70
    18" (457.2mm) SDR 35 7.5% Runner Length 18" (457.2mm) 15 Lb (6.80 Kg) 938-96118-3575
    $669.90
    18" (457.2mm) SDR 35 5% Runner Length 18" (457.2mm) 15 Lb (6.80 Kg) 938-96118-355
    $669.90
    18" (457.2mm) SDR 26 7.5% Runner Length 18" (457.2mm) 15 Lb (6.8 Kg) 938-96118-2675
    $669.90
    18" (457.2mm) SDR 26 5% Runner Length 18" (457.2mm) 15 Lb (6.80 Kg) 938-96118-265
    $669.90
    15" (381mm) SDR 35 7.5% Runner Length 15" (381mm) 13.5 Lb (6.12 Kg) 938-96115-3575
    $592.20
    15" (381mm) SDR 35 5% Runner Length 15" (381mm) 13.5 Lb (6.12 Kg) 938-96115-355
    $592.20
    15" (381mm) SDR 26 7.5% Runner Length 15" (381mm) 13.5 Lb (6.12 Kg) 938-96115-2675
    $592.20
    15" (381mm) SDR 26 5% Runner Length 15" (381mm) 13.5 Lb (6.12 Kg) 938-96115-265
    $592.20
    12" (304.8mm) SDR 35 7.5% Runner Length 12" (304.8mm) 9 Lb (4.08 Kg) 938-96112-3575
    $497.70
    12" (304.8mm) SDR 35 5% Runner Length 12" (304.8mm) 9 Lb (4.08 Kg) 938-96112-355
    $498.75
    12" (304.8mm) SDR 26 7.5% Runner Length 12" (304.8mm) 9 Lb (4.08 Kg) 938-96112-2675
    $498.75
    12" (304.8mm) SDR 26 5% Runner Length 12" (304.8mm) 9 Lb (4.08 Kg) 938-96112-265
    $498.75
    10" (254mm) SDR 35 7.5% Runner Length 10" (254mm) 8 Lb (3.63 Kg) 938-96110-3575
    $405.30
    10" (254mm) SDR 35 5% Runner Length 10" (254mm) 8 Lb (3.63 Kg) 938-96110-355
    $405.30
    10" (254 mm) SDR 26 7.5% Runner Length 10" (254mm) 8 Lb (3.63 Kg) 938-96110-2675
    $405.30
    10" (254mm) SDR 26 5% Runner Length 10" (254mm) 8 Lb (3.63 Kg) 938-96110-265
    $405.30
    8" (203.2mm) SDR 35 7.5% Runner Length 8" (203.2mm) 7 Lb (3.18 Kg) 938-96108-3575
    $344.40
    8" (203.2mm) SDR 35 5% Runner Length 8" (203.2mm) 7 Lb (3.18 Kg) 938-96108-355
    $344.40
    8" (203.2mm) SDR 26 7.5% Runner Length 8" (203.2mm) 7 Lb (3.18 Kg) 938-96108-2675
    $344.40
    8" (203.2mm) SDR 26 5% Runner Length 8" (203.2mm) 7 Lb (3.18 Kg) 938-96108-265
    $344.40
    6" (152.4mm) SDR 35 7.5% Runner Length 6" (152.4mm) 5 Lb (2.27 Kg) 938-96106-3575
    $264.60
    6" (152.4mm) SDR 35 5% Runner Length 6" (152.4mm) 5 Lb (2.27 Kg) 938-96106-355
    $264.60
    6" (152.4mm) SDR 26 7.5% Runner Length 6" (152.4mm) 5 Lb (2.27 Kg) 938-96106-2675
    $264.60
    6" (152.4mm) SDR 26 5% Runner Length 6" (152.4mm) 5 Lb (2.27 Kg) 938-96106-265
    $265.65

Deflection Gauges - Aluminum Fin Kit

Aluminum Fin Deflection Gauges

  • Lightweight, corrosion-resistant
  • Field-verifiable without a proving ring
  • Assembles without tools
  • Fins for 4"-15" gauges have skid size equal to the nominal pipe size-gauge to meet regional codes and will not tip in the line
  • Fin Style Deflection Gauges are designed to be field verified by inspectors without the use of a proving ring.
    • Simply place two fins end to end and measure the width.
    • Add one inch to the mandrel and you have the outside dimension of the gauge. Using this method simplifies the inspector's job of verifying sizes on deflection gauges.

Field Verification:

Fin Style Deflection Gauges are designed to be field verified by inspectors without the use of a proving ring. Simply place two fins end to end as pictured to the right and measure the width.

Add one inch to the mandrel and you have the outside dimension of the gauge. Using this method simplifies the inspector's job of verifying sizes on deflection gauges.

Aluminum Deflection Gauges

Deflection Gauge Kit

    Image Nominal Size Pipe Type Deflection Test Shipping Wt. Item Number Price Qty Action
    8" (203.2mm), 10" (254mm), 12" (304.8mm) SDR 35 7.5% 19 Lb (8.62 Kg) 938-9612-3575
    $1,008.00
    8" (203.2mm), 10" (254mm), 12" (304.8mm) SDR 35 5% 19 Lb (8.62 Kg) 938-9612-355
    $1,008.00
    8" (203.2mm), 10" (254mm), 12" (304.8mm) SDR 26 5% 19 Lb (8.62 Kg) 938-9612-265
    $1,012.20
    6" (152.4mm), 8" (203.2mm), 10" (254mm) SDR 35 7.5% 18 Lb (8.16 Kg) 938-9610-3575
    $937.65
    6" (152.4mm), 8" (203.2mm), 10" (254mm) SDR 35 5% 18 Lb (8.16 Kg) 938-9610-355
    $937.65
    6" (152mm), 8" (203mm), 10" (254mm) SDR 26 5% 18 Lb (8.16 Kg) 938-9610-265
    $937.65

Deflection Gauges - Mandrels for Fin Sets

    Image Description Shipping Wt. Item Number Price Qty Action
    24" Nominal Size, Mandrel (18"-48" [457-1219mm] Fins) For Aluminum Fin Sets 6 Lb (2.72 Kg) 938-9610-24
    $373.80
    10" Nominal Size, Mandrel (4"-15" [102-381mm] Fins) For Aluminum Fin Sets 3 Lb (1.36 Kg) 938-9610-10
    $252.00

Deflection Gauge Aluminum Fins Only

    Image Nominal Size Pipe Type Deflection Test Shipping Wt. Item Number Price Qty Action
    30" (762mm) SDR 35 7.5% 12 Lb (5.44 Kg) 938-96030-3575
    $1,470.00
    30" (762mm) SDR 35 5% 12 Lb (5.44 Kg) 938-96030-355
    $1,470.00
    27" (685.8mm) SDR 35 7.5% 12 Lb (5.44 Kg) 938-96027-3575
    $1,396.50
    27" (685.8mm) SDR 35 5% 12 Lb (5.44 Kg) 938-96027-355
    $1,396.50
    24" (609.6mm) SDR 35 7.5% 11 Lb (4.99 Kg) 938-96024-3575
    $1,312.50
    24" (609.6mm) SDR 35 5% 11 Lb (4.99 Kg) 938-96024-355
    $1,312.50
    21" (533.4mm) SDR 35 7.5% 10 Lb (4.54 Kg) 938-96021-3575
    $1,228.50
    21" (533.4mm) SDR 35 5% 10 Lb (4.54 Kg) 938-96021-355
    $1,228.50
    18" (457.2mm) SDR 35 7.5% 8 Lb (3.63 Kg) 938-96018-3575
    $1,123.50
    18" (457.2mm) SDR 35 5% 8 Lb (3.63 Kg) 938-96018-355
    $1,123.50
    15" (381mm) SDR 35 7.5% 5 Lb (2.27 Kg) 938-96015-3575
    $428.40
    15" (381mm) SDR 35 5% 5 Lb (2.27 Kg) 938-96015-355
    $428.40
    15" (381mm) SDR 26 5% 5 Lb (2.27 Kg) 938-96015-265
    $428.40
    12" (304.8mm) SDR 35 7.5% 4 Lb (1.81 Kg) 938-96012-3575
    $375.90
    12" (304.8mm) SDR 35 5% 4 Lb (1.81 Kg) 938-96012-355
    $375.90
    12" (304.8mm) SDR 26 5% 4 Lb (1.81 Kg) 938-96012-265
    $375.90
    10" (254mm) SDR 35 7.5% 3 Lb (1.36 Kg) 938-96010-3575
    $297.15
    10" (254mm) SDR 35 5% 3 Lb (1.36 Kg) 938-96010-355
    $297.15
    10" (254mm) SDR 26 5% 3 Lb (1.36 Kg) 938-96010-265
    $297.15
    8" (203.2mm) SDR 35 7.5% 3 Lb (1.36 Kg) 938-96008-3575
    $239.40
    8" (203.2mm) SDR 35 5% 3 Lb (1.36 Kg) 938-96008-355
    $239.40
    8" (203.2mm) SDR 26 5% 3 Lb (1.36 Kg) 938-96008-265
    $239.40
    6" (152.4mm) SDR 35 7.5% 2 Lb (0.91 Kg) 938-96006-3575
    $224.70
    6" (152.4mm) SDR 35 5% 2 Lb (0.91 Kg) 938-96006-355
    $224.70
    6" (152.4mm) SDR 26 5% 2 Lb (0.91 Kg) 938-96006-265
    $224.70
    4" (101.6mm) SDR 35 7.5% 1.5 Lb (0.68 Kg) 938-96004-3575
    $214.20
    4" (101.6mm) SDR 35 5% 2 Lb (0.91 Kg) 938-96004-355
    $214.20

Deflection Gauges - Proving Rings

Proving Rings

Proving rings allow an inspector to verify the outside diameter of the gauges to make sure it slides over snugly to prove the diameter of the gauge and allow it to be used for the test.

  • Used to verify deflection gauge sizes
  • Standard sizes: 6"-15" SDR 35 5% deflection and 8"-12" SDR 35 7.5% deflection
  • Custom sizes: Custom sizes for 5"-18" also available

Deflection Gauge Proving Rings

Deflection Gauge Proving Rings

    Image Nominal Size Pipe Type Deflection Test Shipping Wt. Item Number Price Qty Action
    18" (457.2mm) SDR 35 5% 1 Lb (0.45 Kg) 938-9600-185
    $252.00
    15" (381mm) SDR 35 5% 1 Lb (0.45 Kg) 938-9600-155
    $236.25
    12" (304.8mm) SDR 35 7.5% 1 Lb (0.45 Kg) 938-9600-1275
    $219.45
    12" (304.8mm) SDR 35 5% 1 Lb (0.45 Kg) 938-9600-125
    $219.45
    10" (254mm) SDR 35 7.5% 1 Lb (0.45 Kg) 938-9600-1075
    $200.55
    10" (254mm) SDR 35 5% 1 Lb (0.45 Kg) 938-9600-105
    $200.55
    8" (203.2mm) SDR 35 7.5% 1 Lb (0.45 Kg) 938-9600-0875
    $185.85
    8" (203.2mm) SDR 35 5% 1 Lb (0.45 Kg) 938-9600-085
    $185.85
    6" (152.4mm) SDR 35 5% 1 Lb (0.45 Kg) 938-9600-065
    $179.55
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