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350 Series, Tapped

Heavy bosses has been added to the 350 Series check valves to provide proper length for leak-proof side connections. Valves can be single or double tapped in 1/8” or 1/4" taper pipe thread. When ordering, specify whether tapping is to be on the inlet or outlet side of the valve and what size connection is required.

Similar in construction and operation to the No. 300. Contains a Buna-S rubber poppet for a leak-proof seal. Maximum temperature of 225°F.

 

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No. 351, Single-Tapped

The No. 351 Strataflo single-tapped check valve is generally used for submersible pump installations or when it is necessary to attach a pressure switch, pressure gauge, snifter valve, drain or blow lines, or adding chemicals. Similar in construction and operation to No. 300, however the valve is drilled and tapped on either the inlet or outlet side.

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351 Single-Tapped Pricing Information
1" 1-1/4" 1-1/2" 2" 2-1/2" 3" 3"F * 4"
$44.36 $46.44 $67.76 $104.88 $236.52 $255.10 $451.26 $734.68

* New valve: Standard female threads on both ends, Cv Factor of 185
** Original valve: 2-1/2" valve body with 3" male threads, Cv Factor of 68.5
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No. 352, Double-Tapped

The No. 352 Strataflo Check Valve is identical to the No. 351 described above, except that drilled and tapped side outlet connections are furnished on both the inlet and outlet sides, as illustrated at left. When ordering, specify what size connections are required. See specifications below.

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352 Doubled-Tapped Pricing Information
1" 1-1/4" 1-1/2" 2" 2-1/2" 3" 3"F * 4"
$46.90 $49.14 $68.16 $110.26 $258.28 $277.62 $473.78 $757.20
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350 Series Tapped Specifications
Pipe
Size
351
Series
Part #
352
Series
Part #
Overall
Length
Valve
Diameter
Valve
Weight
Flow Factor
CV
1" 351-100 352-100 3.69" 2.00" 1.25 lb 7
1-1/4" 351-125 352-125 4.57" 2.41" 2.00 lb 14
1-1/2" 351-150 352-150 4.88" 2.69" 2.45 lb 32
2" 351-200 352-200 5.56" 3.34" 3.90 lb 31
2-1/2" 351-250 352-250 6.79" 3.81" 7.15 lb 69
*3" 351-300-F 352-300-F 7.40" 4.71" 11.95 lb 185
**3" 351-300 352-300 6.79" 3.81" 8.15 lb 69
4" 351-400 352-400 10.00" 5.80" 21.65 lb 240

* New valve: Standard female threads on both ends, Cv Factor of 185
** Original valve: 2-1/2" valve body with 3" male threads, Cv Factor of 69

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