Home / Appliance / Parts / Pump Pressure Switch Tube U37-673P Pump Pressure Switch Tube U37-673P$19.98 Price may not be up-to-date. In Stock View Product Part Number: U37-673P Brand: STA-RITE INDUSTRIES Seller: Sears PartsDirect Categories: Appliance, Parts Not Returnable Description This pressure switch tube (part number U37-673P) is for pumps. Pressure switch tube U37-673P connects to the pressure switch. Disconnect electrical power before installing this part. Wear work gloves to protect your hands.