Y pattern globe valves also called steam drain valves are widely used in thermal power plant industry, oil and gas industry, chemical industry etc. Home » Products and services » Control valve solution » Y pattern globe valve-Manual electric steam drain valve.

The NIBCO® bronze angle globe valve is recommended for trim valve application in an automatic fire sprinkler system. Typically it is used as the Main Drain in the fire protection system. The resilient seat allows positive shutoff at 175 psi WWP.

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175 psi/12.1 bar non-shock water working pressure (WWP) Integral seat Screw-over bonnet Renewable seat disc Class 125 threaded end connections Dezincification resistant Use in U.S. Drinking water applications is prohibited after January 3, 2014 Listed by Underwriters Laboratories of U.S. And Canada for trim and drain (UL258) Size range 1¼ to 2.

Globe valves A Globe valves is a linear motion valve and are primarily designed to stop, start and regulate flow. The disk of a Globe valve can be totally removed from the flowpath or it can completely close the flowpath. Conventional Globe valves may be used for isolation and throttling services. Although these valves exhibit slightly higher pressure drops than straight=through valves (e.g., gate, plug, ball, etc.), they may be used where the pressure drop through the valve is not a controlling factor.

Download naruto eps 451. Because the entire system pressure exerted on the disc is transferred to the valve stem, the practical size limit for these valves is NPS 12 (DN 300). Globe valves larger than NPS 12 (DN 300) are an exception rather than the rule. Larger valves would require that enormous forces be exerted on the stem to open or close the valve under pressure.

Globe valves in sizes up to NPS 48 (DN 1200) have been manufactured and used. Globe valves are extensively employed to control flow. The range of flow control, pressure drop, and duty must be considered in the design of the valve to avert premature failure and to assure satisfactory service. Valves subjected to high-differential pressure-throttling service require specially designed valve trim. Generally the maximum differential pressure across the valve disc should not exceed 20 percent of the maximum upstream pressure or 200 psi (1380 kPa), whichever is less. Valves with special trim may be designed for applications exceeding these differential pressure limits. Disk & Seat & Stem of Globe valves Disk: The most common disk designs for Globe valves are: ball disk, composition disk and the plug disk.

Ball disk design is used primarily in low pressure and low temperature systems. It is capable of throttling flow, but in principle it is applied to stop and start flow. Composition disk design uses a hard, non-metallic insert ring on the disk, which ensures a tighter closure. Plug disk design provides better throttling than ball or composition designs. They are available in many different designs and they are all long and tapered. Seat: Globe valve seats are either integrated or screwed in to the valve body.

Many Globe valves have backseats inside the Bonnet. Back seats provides a seal between the stem and Bonnet and prevents system pressure from building against the valve pakking, when the valve is fully open.

Back seats are often applied in Globe valves. Stem: Globe valves uses two methods for connecting the disk and the stem: the T-slot and the disk nut construction. In the T-slot design, the disk slides over the stem, while in the disk nut design, the disk is screwed into the stem. Construction of a Globe valve Globe valves usually have rising stems, and the larger sizes are of the outside screw-and-yoke construction. Components of the Globe valve are similar to those of the gate valve. This type of valve has seats in a plane parallel or inclined to the line of flow.

Maintenance of Globe valves is relatively easy, as the discs and seats are readily refurbished or replaced. This makes Globe valves particularly suitable for services which require frequent valve maintenance. Where valves are operated manually, the shorter disc travel offers advantages in saving operator time, especially if the valves are adjusted frequently. The principal variation in Globe-valve design is in the types of discs employed.