Tracing the history of the development of electromagnetic valve, so far, the solenoid valve at home and abroad from the principle is divided into three categories (ie: direct acting, step-by-step pilot), and from the valve structure and material differences The difference between the principle is divided into six sub-categories (direct acting diaphragm structure, step-grate structure, leading diaphragm structure, direct acting piston structure, step-by-step piston structure, pilot piston structure). Direct-acting electromagnetic valve principle: When power is on, the electromagnetic coil generates electromagnetic force to lift the closing member from the valve seat, the valve opens; when the power is off, the electromagnetic force disappears, the spring presses the closing member against the valve seat, and the valve is closed. Features: In vacuum, negative pressure, zero pressure can work normally, but the path generally does not exceed 25mm. Distribution of direct-acting solenoid valve principle: It is a direct acting and pilot-based combination of principles, when the inlet and outlet without pressure, the power, the electromagnetic force directly to the pilot valve and the main valve closing member in turn lifted up, The valve is open. When the inlet and outlet to achieve the start of the pressure difference, the electricity, the solenoid pilot small valve, the main valve lower chamber pressure rises, the pressure on the chamber down, so that the use of pressure to push the main valve open; power, the pilot valve spring Force or media pressure to push the closure, move down, the valve closed. Features: Zero pressure or vacuum, high pressure can also be a reliable action, but the power is larger, the requirements must be installed horizontally. Pilot solenoid valve principle: When power is on, the electromagnetic force opens the pilot hole and the pressure in the upper chamber rapidly drops, forming a low pressure differential on the lower part of the closing part. The fluid pressure pushes the closing part to move upward and the valve opens. The spring force closes the pilot hole and the inlet pressure rapidly passes through the bypass hole to create a low pressure differential across the valve. The fluid pressure forces the valve to move downward and close the valve. Features: High fluid pressure range high, can be installed (to be customized), but must meet the fluid pressure conditions. More keyword search: Solenoid valve
Steel Grate
The steel grate is an open steel member that is orthogonally combined with load-bearing flat steel and cross bars according to a certain distance, and fixed by welding or pressing; the cross bars generally use twisted square steel, and round steel can also be used. or flat steel,
The steel grate is generally made of carbon steel, and the surface is hot-dip galvanized, which can prevent oxidation. It can also be made of stainless steel. The steel grating has ventilation, lighting, heat dissipation, anti-skid, explosion-proof and other properties.
Steel grates are mainly used as gutter cover plates, steel structure platform plates, steel ladder treads, trench cover plates, steel ladder treads, building ceilings, etc.
FAQ
Q1: Are you a factory?
A1: Yes, we are a professional manufacturer of wire mesh products focusing on wire mesh for decades.
Q2: How can I get a quotation?
A2: You need to provide material, sheet size, wire diameter, hole distance, and quantity for inquiry. Special requirements can also be specified.
Q3: Is it ok if I want free samples?
A3: Yes, we can provide free samples in 20cm-50cm sizes along with our catalog. But the express fee will be on your account. If you place an order, we will refund the courier fee.
Q4: What's your payment term?
A4: Generally, our payment terms are T/T 30% advance payment, balance 70% against copy of B/L. We can also discuss other payment terms.
Q5: How about your delivery time?
A5: 1. We always prepare enough stock materials for your urgent needs, and the lead time for all stock materials is 7 days.
Depending on quantity and technology, exact lead times and production schedules for non-stock items will be communicated to you.
Steel Grate,Galvanized Steel Grate,Heavy Duty Steel Grate,Galvanized Serrated Steel Grate
Anping County Dongjie Wiremesh Products Co., Ltd. , https://www.dongjiewire.com