Signal valve, the fire signal valve, 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! Valve solutions provide complete engineering, signal gate sale, sale, sale of professional services. Product Name: Signal Gate Model: Z45X Drive: L type connector: flange, groove form structure: shutter seal structure: soft sealing pressure range: 1.0-2.5MPa Nominal Diameter: DN50-DN600 Material used: cast iron, ductile iron, cast steel nameplate: male workers brand products described gate signal ordering process, in addition to a fire signal resilient seated gate valve closure beyond the advantages, and can be more intuitive display the valve opening degree so that in a relatively distant determining the opening of the valve, take appropriate measures. Open and close quickly and reliably, so often used in fire protection systems. Overall package plastic spool ductile iron skeleton inside and outside the high-performance vulcanized rubber and the latest technology for the overall coating, tight fitting solid, accurate geometry, sealing flexible, completely isolated from the fluid metal spool, corrosion-resistant. One-piece copper copper nuts and nut spool ductile iron skeleton, using special technology closely connected as one, ensuring the long-term operation and the current rush is not loose, to avoid failure of the control valve. Block flexible closure valve at the bottom of the seat of the company used flat-bottomed basin-wide straight-through design, the same as has been the pipeline, easy accumulation of debris to ensure reliable sealing, fluid unimpeded. Self-sealing valve cover and valve cover seal between the valve body from structural design, the pressure within the allowable range, the higher the fluid pressure, the more tightly sealed. The seal structure seals between the valve stem and the valve cover on special, using three o-ring design, as compared with the traditional structure of valve packing seal, seal tightly round after round, significantly reducing frictional resistance. The valve in any opening, pressure and have the stem safety lock function, to ensure that the operation and maintenance of the valve stem is not out of pressure to avoid personal injury compact lightweight structure, the maximum working height than traditional gate reduce 60mm-300mm or more, saving engineering space; body with ductile iron material, lighter in weight than conventional valve to reduce the about 20% -30%, installation and maintenance convenience. 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 signal valve, gate valve fire signal associated drawing: Related Products: Low-temperature stainless steel valve More Related Products: trench gate