Oswal Industries Ltd. Offers Butt Weld End Pressure Seal Globe Valve. Oswal Industries Ltd. Has received ISO 9001:2000 certifications. Butt Weld End Pressure Seal Globe Valve is used for both on-off and throttling operation. The body design of Butt Weld End Pressure Seal Globe Valve incorporates streamlined flow path for reduced pressure drop. The flow characteristics of these valves permit accurate and repeatable flow control. The pressure seal bonnet joint eliminates the body / bonnet flanges, reducing weight. The internal pressure applied to the pressure seal valve forces the sealing element into the tighter seal. The higher the internal pressure the tighter the seal because of pressure assisted seal.