The 7H auto-nozzle is a self-sealing grease gun independently developed by Zhongzheng Technology Equipment Co., Ltd. It has been certified by the ISO system. It is the most popular in the market in recent years, with excellent quality, stability and durability. Also it is affordable, and be well-known as a kind of one-inch high-flow grease gun. The comprehensive advantages are very obvious, and no complaints have been sold for many years. The main structure of the oil gun is composed of oil gun body, main valve, self-sealing induction port, auxiliary valve, adapter sleeve, oil nozzle, oil inlet, baffle, limit plate, handle and switch handle. This kind of self-sealing oil gun are different with larger size, more oil storage, thicker structure and longer service life.

    The unique nozzle design makes the gun head more sensitive. The pressure increases automatically to open the gun, and the gun is automatically cut without pressure, which avoids oil waste and is safe and environmentally friendly.

    This product's universal thread had been proved to be suitable for domestic high-flow fuel dispensers, such as Zhengxing, Hengshan, Space, Changji, Sanjin, and Beilin, for filling kerosene, gasoline, diesel and other oil products. It is widely used in the imported quality of automobile manufacturing, electric power chemical industry, and construction machinery.

Product Parameters:

Product Features:

(1) Chromium plating process of gun nozzle

    The noble metal coating is passivated on the metal layer of the gun nozzle, and a very thin passivation film is formed on the surface. The chrome-plated layer has a high hardness of 400～1200HV, and the service life is greatly enhanced.

(2) Thickened elbow with retaining spring

    The spring is made of high carbon steel precision work, and the whole heat treatment is high frequency quenching.

(3) Wear-resistant barrel auxiliary valve

    Based on the ergonomic design, the gun body structure protects the fueling gun and human hands well.

(4) Thicken the gun body

    It is made of high-quality alloy with strict technology, inner wire interface, durable.

(5) Aluminum alloy gun body

     Light weight, easy to operate, unique appearance. The nozzle can be replaced, only the screw on the nozzle needs to be removed, low cost, long life, durable, improve efficiency and increase profit.

(6) Three adjustable gears

    large flow, three-speed flow rate can be adjusted, refueling is more convenient.

(7) Oil inlet filter

    The filter screen can effectively filter out impurities and iron filings that may block the air inlet nozzle, avoiding the malfunction of the fuel nozzle caused by the air inlet nozzle being blocked, and ensuring the safe and smooth refueling.