Buried valve, gate valve extensions Buried, Shanghai brand - Shanghai-Valve Co., Ltd. quality and stability: the whole process of quality control, nuanced, comprehensive detection! Reasonable price: high internal cost control, reduced costs, to help customers! Fast delivery: advanced production lines, adequate stocking, shortening delivery time! Valves provide complete engineering solutions, Buried gate sale, sale, sale and professional services. Product Name: Buried Gate Model: RVZM / MZ45X Drive: Handwheel Connection: Flange structure: shutter seal structure: soft sealing pressure range: 1.6MPa Nominal diameter: DN50-600 common material: cast iron, ductile iron, cast steel nameplate: male workers brand products described ordering process RVZM / MZ45X buried gate valve, gate valve extensions Buried maintenance-free and can be extended using stem design, once buried, to avoid valve well expensive cost and road reconstruction and valve replacement several huge investments and beautify the road environment, rolling resistance, avoid covers lost cause accidents. valve stem can be flexibly customized according to the well depth, the top of the stem with a valve switch display, the installation of signal remote device, the switching valve mistakenly locking device 1, the overall bonnet dark bar design, compact structure; Two stem nut and gate structure, without jamming phenomenon; a straight path, no leakage leaving the cavity; stem seal with "O" ring. 2, has excellent corrosion resistance, the housing, the outer surface coating of epoxy resin, the inner surface of the liner when needed enamel; connecting bolts using hex bolts, the top rubber seal. 3, reliable health epoxy hygiene standards GB / T17219-1998, the shutter covering the whole meet the health inspection of rubber; valve stem nuts and other parts made from water corrosion of stainless steel or bronze until the material. Suitable for drinking water, drainage, sewage treatment, gas and gas, industrial and food industries. The gate valve opening and closing parts, the direction of movement of the fluid direction perpendicular to the gate, the gate valve can only be fully open and fully closed, can not be adjusted and the throttle. Ram has two sealing surfaces, sealing surfaces the most common mode of gate valve forming wedge, wedge angle with the valve parameters vary, usually 50, the medium temperature is not high when 2 ° 52 '. Wedge gate valve can be made into a whole, called the rigid gate; also be made to produce small quantities of deformation gate in order to improve its process of, to make up the sealing surface angle deviations arising during processing, such gate board called the flexible gate. Valve closed, sealing surface can only rely on media pressure to seal, which rely on media pressure to ram pressure to the sealing surface of the other side of the seat to ensure the sealing surface of the seal, which is self-sealing. Most of the valve is sealed by force, that the valve is closed to rely on external pressure to force the gate valve to ensure that the sealing of the sealing surface. Gate valve with the valve stem linear movement, called the lift rod valve also called clear shot valve. Often movements are trapezoidal threaded rod, through the guide slot valve and the valve on top of the nut, and the rotary motion into linear motion, which is the operating torque thrust into action. Open the valve, when the gate valve lift height equal to diameter of 1: 1 times, the fluid channel is completely smooth, but at run time, this position can not be monitored. Actual use, is the apex of stem as a sign that the fixed position, as its fully open position. Temperature appears to consider locking phenomenon, usually open to the vertex position, and then rewind 1 / 2-1 circle, as the location of a fully open valve. Therefore, the fully open position of the valve, according to damper position, that stroke is determined. Some valve, the stem nut is located at the gate, handwheel drive stem rotation, leaving the gate to upgrade, this valve is called the rotating rod valve or valve called the dark bar. Valve Principle closure member (shutter) move made fully open and fully closed off by the vertical direction via the centerline. The main gate valve selection Gate cut off or connected line of medium, is generally not a regulator or throttling. Classification Valve Valve according to different classification methods can be divided into: parallel gate valve, wedge gate, lift gate, rotating rod valve, fast opening and closing valve, necking valve, flat gate valve and so on. Valve characteristic fluid resistance, the applicable pressure, large temperature range, medium flow unrestricted, good sealing performance. Contact Shanghai-Valve Co., Ltd. Tel: 021-31263381 (Chen Gong) Fax: 021-60298264 Mobile: 13512135667 E-mail: xgfm021@163.com Address: Industrial Park, Jiading District Huating 1199 Website: http: // www .xgfmvalve.com buried gate valve, gate valve extensions Buried Related drawing: Related Products: Soft sealing valve More Related Products: Bellows valve