Introduction and characteristics of elastic seat sealing gate valve

Overview:
Elastomeric seat seal valves are one of the most widely used valves in various fluid transfer projects. Conventional valve gates generally have phenomena such as fluid leakage and serious corrosion of internal parts. At present, the ordinary soft sealing gate valve on the market is easy to leak out of the shaft seal of the valve stem, and it is impossible to replace the sealing ring under the condition of continuous water and any opening.

The elastic seat sealing gate valve adopts novel structural design, strict manufacturing technology and high-performance new material, which overcomes the defects of traditional gate valve sealing, internal parts, especially the rust of the ram, the rubber elastic fatigue and aging, and the sealing performance is reliable. The operation is light, the maintenance is simple and convenient, and the service life is long. Applicable to domestic water systems, water supply and drainage systems, sewage treatment systems, chemical fluid delivery systems, etc., used as shut-off devices in fluid pipelines in construction, urban environmental protection, petrochemical, pharmaceutical, food, metallurgy, textile, electric power and other industries (not applicable) In throttling).

Features:
● Ductile iron casting shell The valve body and bonnet are made of ductile iron with high strength and corrosion resistance. The valve seat and the valve body are integrally cast and formed at no price.

● Full-diameter flat-bottom runner When the valve is fully open, the ram is completely lifted off the runner. There is no groove at the bottom of the valve seat. It is not easy to accumulate debris. It is equivalent to a straight pipeline and has the lowest flow resistance.

● All rubber gates High-performance rubber completely wraps the skeleton, and the cast iron is completely isolated from the medium without corrosion. The soft rubber seal is firmly bonded to the skeleton and is integrally vulcanized.

● Integral copper nut
The gate valve gate nut is integrally connected with the skeleton, and there is no moving air stroke and sending and dropping phenomenon. Bronze material, self-lubricating with the stem, effectively reducing operating torque.

● Gate rail system There is a rail system between the valve body and the gate. When the shutter is sealed, the water pressure cloth is offset, and the rubber is contactlessly worn during lifting, preventing the valve stem from bending.

● Stainless steel valve stem Stainless steel corrosion-resistant valve stem, trapezoidal thread rolling processing, screw teeth smooth and wear-resistant, effectively reduce operating torque and improve service life.

● Double push bearing (dark rod type DN≤300)
The stem of the valve stem has a double push bearing, and the inverted stem is protected from water pressure. Bronze material, self-lubricating with the stem, effectively reducing operational distortion.

● Stem axial seal (dark rod type)
Three O-ring seals, axial self-sealing under water pressure, no trouble with packing seal adjustment. The top pressure ring prevents external impurities from entering the shaft seal.

● Inverted sealing structure (dark rod type DN≤300)
The patented inverted seal structure allows the valve to be replaced with an O-ring at the gland in case of constant water and emergency in any opening.

● Middle flange connection High-strength Hexagon socket head cap screws, hot melt adhesive and bonnet rubber ring are closed to completely separate the screws from the working medium and the external environment.

● Double-legged double lifting ring For all sizes of gate valves, the valve body is integrally cast with two feet. The valve cover is integrally cast with two lifting rings for easy handling and storage.

● Non-toxic anti-corrosion coating The inner and outer surfaces of the valve are electrostatically coated with non-toxic epoxy resin powder, which can prevent corrosion and long life, and can be directly used in drinking water, food and medicine industries.

● Various types of operation The structure has a dark rod type and a bright rod type. It can be operated by hand wheel, T-handle, electric and pneumatic devices, valve position indication, valve position signal output, password lock control, extended operating lever, direct buried device, etc.

● Convenient installation and installation With flanges, clamp grooves, sockets, sockets, mechanical street, PE joints and other connection methods, optional telescopic function, convenient connection with cast iron, steel, plastic and other pipelines.