Bolted Bonnet Gate Valve

Cast Steel Gate valves Glofa Supplied can be fully opened and fully closed to be used for cutting in the pipeline.The entire flow channel is a straight-through passage when the valve is fully-open, and the pressure loss is minimum.Gate valve is usually for working condition in which the valve is not opened or closed frequently, Itâ??s not suitable for adjustment or throttling. The most important feature of the cast steel gate valve of Glofa produced is that they can be ensured that the permissible leakage rate can be lower than that specified in API 6D and API 600, and the middle shaft sealing can pass the USA VOC leakage test. The wedged gate of the Glofaâ??s gate valve provides tight sealing even at low differential pressure. Grooved wedge guided and fitted by body, assures proper and consistent seal regardless of valve position, and also minimizes seat wear and damage, since seating surfaces of the wedge and seat are in contact during less than 5% of the total wedge travel.

* The API 600 Gate Valves is exceptionally sturdy, rugged, and durable, with a reputation for quality, integrity, and long service. * They are designed for tight sealing and ease of operation. The valves are available flanged & butt-weld ends in pressure rating from ASME Class 150 to Class 2500, and in a variety of materials of construction. * Gate Valves are of flexible wedge design, outside screw and yoke, and bolted-bonnet construction. The valves conform to API 600. Main features * Bolted body-bonnet design,seal welded & Valves with pressure seal bonnet * Bellows-sealed Gate and Globe valves available * Bolted body-bonnet joints provided with spiral-wound stainless steel gasket and graphite filler for maximum protection against leaks * Die-formed graphite inner packing rings and braided graphite end rings with Inconel wire reinforcement and corrosion inhibitor * T-head stem-disc connection of gate valve fully meets strength requirements of API 602 and API 598 * Rolled ACME thread on stem for smooth operation Tapered shoulder on the stem for back seating * Self-aligning type gland assembly with stud-and-nut tightening * Integral hard-faced body seat for globe and check valves * Spring-loaded disc on check valves suitable for no horizontal applications too * Gate and globe valves can be offered with electrical actuators * Austenitic SS forging for body and bonnet of Cryogenic valves, resulting in excellent impact strength, minimal heat loss and resistance to corrosion * Valves can be offered to NACE MR-0175 and other special NACE requirements

Pressure Seal Bonnet Gate Valve Pressure seal bonnet gate valve is sealed by media pressure, and the pressure is more, the sealing is more reliable. On valve bonnet, there is a smooth cone which has self tight seal ring. This type valve is applied to chemical fuel electric power station. It is more simple than bolt bonnet type gate valve. Specification: Size: 2~48 Pressure Rating: Class600~2500LB Main Materials: WCB, LCC, LCB, CF8, CF8M, CF3, CF3M, A105, LF2, LF1, F11, F304, F316, F304L, F316L etc. Design and Manufacture: ASME B16.34, API600, BS1414, EN1984 Face-to-Face:ASME B16.10, EN558 Ends Connection: Flange, Butt Welding etc. Inspection & Testing: API 598 Operator: Handwheel (Sizeâ?¤4), Gear (Sizeâ?¤8), Electric, Pneumatic. Feature: Pressure Seal Bonnet, PSB Flexible Disc Fully Guided Rising Stem and Non-rising Handwheel Renewable Seat Ring Low Leakage