The 09-3-3X is a 4-inch back flow valve manufactured by US VALVE. With a maximum pressure rating of 150 PSI and a maximum temperature rating of 200°F, this valv
The 09-3-3X is a 4-inch back flow valve manufactured by US VALVE. With a maximum pressure rating of 150 PSI and a maximum temperature rating of 200°F, this valv
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