Буровая установка Запасные части / откидной клапан с весны

Flapper Valve With Spring& Pin Drilling Rig Spare Parts Full Flow Drill Pipe Floate Valve Material: AISI 8620 Steel Process: Investment Casting IS9001:2000 Heat Treatment: Carburization Machined by NC Machine, Universal Milling Machine Dimensions and tolerances per ANSI Y14.5-82 1. These flappers are cast by Investment Casting Process and used for Drill Pipe Float Valves. 2. Heat Treatment: Carburize at 1500-1550°F to .005/.010 depth with hardness 58 Rc Min. 3. All the products are made according to ISO9001:2000. 4. We mainly produce the products as per customer’s drawings. 5. Small orders and special design is accepted. 1F-2R 2F-3R 3F 4F 4R 5F-6R 6R Cage MODEL "G" Flapper- Full Flow Flapper style valve features,an investment cast flapper. It has quick opening for full flow through the valve. Designed for highly abrasive drilling fluids. Cages made from hi-tech alloys Coated with Xylan-the most successful fluoropolymer coating in the world Dramatically reduces corrosion and erosion. The Float Valve This Float Valve is normally installed in a standard bore-back of the bit sub, to provide fluid flow control at the bottom of the drill stem. It also prevents backflow of cuttings from plugging the drill bit jets while making connections. When the flapper is held open by the built-in latch, the drill pipe fills from the bottom, This eliminates the mess and lost time of filling operations, Running in with the flapper open also reduces the potential of formation damage from pressure surges caused by the bit acting as a piston or ram as it is lowered into the hole. The flapper latch is automatically released by initial circulation of drilling fluid through the valve. During normal circulation, the flapper is fully opened and out of the way. The large bore of the valve provides minimum flow restriction. When circulation is stopped, the flapper is closed by the flapper spring, preventing backflow through the bit. When run in the closed position, the valve allows the drill pipe to be floated in while only partially filled with drilling fluid. This lowers the effective weight of the drill string and reduces strain on rig equipment Packaging: one piece in a bag, then packed into corrugated box, finally packed into plywood cases of steel crates as customer's requirements.