Media Valve Co., Inc.
Media Valve Co. Inc.

The Manufacturer of Mosites Butterfly Valves

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Flange Bolt Tabulation for Butterfly Valves

Flange Bolt Table For Mosites Wafer Butterfly Valves

Valve Size Standard Body Width Wafer Bolt Length (Standard) Narrow Body Width Wafer Bolt Length (Narrow) Number of Bolts Required Bolt Size
2”  1.50 4.5 1.50 4.5 4 5/8”-11NC 
3”  2.00 6.0 1.81 6.0 4 5/8”-11NC 
4”  2.00 6.0 2.00 6.0 8 5/8”-11NC 
6”  2.25 6.5 2.19 6.5 8 3/4”-10NC 
8”  3.50 7.5 2.38 6.5 8 3/4”-10NC 
10”  3.50 7.5 2.69 7.0 12 7/8”-9NC 
12”  3.75 8.0 3.06 7.5 12 7/8”-9NC 
14”  4.50 9.0 3.06 8.0 12 1”-8NC 
16”  4.50 9.0 4.00 8.5 16 1”-8NC 
18”  5.50 10.5 4.50 9.5 16 1-1/8”-7NC 
20”  5.75 11.0 5.00 10.5 20 1-1/8”-7NC 
24”  6.00 11.0 6.00 11.0 20 1-1/4”-7NC 
30”  7.00 13.5 / 3.25 6.50 13 / 3.25  24 / 8  1-1/4”-7NC 
36”  7.875 15 / 3.75 7.875 15 / 3.75  28 / 8  1-1/2”-6NC 

Flange Bolt Table For Mosites Lug Type Butterfly Valves

Valve Size Standard Body Width Lug Bolt Length (Standard) Narrow Body Width Lug Bolt Length (Narrow) Number of Bolts Required Bolt Size
2”  1.50 1.25 1.5 1.25 8 5/8”-11NC 
3”  2.00 1.75 1.81 1.75 8 5/8”-11NC 
4”  2.00 1.75 2.00 1.75 16 5/8”-11NC 
6”  2.25 2.00 2.19 2.00 16 3/4”-10NC 
8”  3.50 2.75 2.38 2.00 16 3/4”-10NC 
10”  3.50 2.75 2.69 2.25 24 7/8”-9NC 
12”  3.75 3.00 3.06 2.5 24 7/8”-9NC 
14”  4.50 3.50 3.06 2.75 24 1”-8NC 
16”  4.50 3.50 4.00 3.25 32 1”-8NC 
18”  5.50 3.75 4.50 3.25 32 1-1/8”-7NC 
20”  5.75 4.00 5.00 3.50 40 1-1/8”-7NC 
24”  6.00 4.25 6.00 4.25 40 1-1/4”-7NC 
30”  7.00 5 / 3.25 N / A  N / A  48 / 8  1-1/4”-7NC 
36”  7.875 5.75 / 3.75 7.875 5.75 / 3.75  56 / 8  1-1/2”-6NC 

1) Bolt lengths are calculated without flat washers, lock washers, envelope gaskets, spacers,
or full face reinforing rings.

2) Lengths shown are maximum allowable; all others are minimum allowable.

Our company is taking all precautions during the COVID-19 coronavirus pandemic. We do remain OPEN for business and stand ready to serve you. We are limiting customer service interactions to PHONE and EMAIL ONLY however our offices are closed to in-person visits.