Brass check valve with lock is a valve for household water meter to prevent mutual interference between water meter and household meter, which independently developed by our companny in such cases. Has received national patent certificate. (Patent Number ZL200420034350.1). After installed and used the meter, it completely avoid rotation phenomenon, and has a non-return valve function, which can effectively prevent the user complaints and the phenomenon of refusing to pay water charges, reducing the management cost of water supply enterprises.
| Performance Parameter | |
| Normal Diameter | DN15-25 | |
| Normal Pressure | 1.6 MPa | |
| Applicable Temperature | -10 centi degree—80 centi degree | |
| Applicable Medium | water | |
| Shell Test Pressure | 2.4 MPa | |
| Sealing Test Pressure | 1.76 MPa | |
| Valve corn opening pressure | ≤0.03 MPa | |
| Loss of Pressure | ≤0.02MPa | |
| Materials of Main Spare Parts | |
| Accessory Name | Materials | |
| Body | Brass | |
| Moving Joint | Brass | |
| Joint Nut | Brass | |
| Valve Core | Brass | |
| Sealing ring | Silicon Rubber | |
| Main install connection Measures | |
| DN | G | G1 | L | |
| |
| 15 | 1/2” | 1/2” | 3/4” | 45 | |
| 20 | 3/4” | 3/4” | 1” | 50 | |
| 25 | 1” | 1” | 1 1/4” | 58 | |
Founded in 1998, located in Qionglai Industrial Park, Chengdu, Sichuan, China, our company is a high-tech enterprise consisting of manufacturing factory and trade department. Our headquarters covering an area of about 6.67 hectares and we have in excess of 300 staff all across China. The annual output value of our company in 2009 exceeds one hundred million yuan RMB. We have three sub factories: a foundry, a valve factory and a gas regulating equipment factory. We have a number of nationally patented products. We have obtained the ISO9001 and ISO14001 certification and also a health certificate awarded by Sichuan Health Department. Our featured products include Z15 and Z45 series gate valves, butterfly valves, ball valves, etc, including an inner thread connecting gate valve, a new product worldwide. We are able to cast over 10, 000 tons, manufacturing 10, 000, 000 valves and 100, 000 sets of gas regulating equipments annually, with annual productivity to the value of up to 500 million yuan RMB. In addition, our specialized patented products including a magnetic lockable valve, anti-drip valve, anti-interference valve, encrypted anti-collision fire hydrants and others are customized for urban water and gas supply enterprises in order to help solve technical and management problems. These products are recommended by China's Urban Water Supply and Drainage Association many times for use in the industry. We believe a marketing theory of "Follow the market, customer first, win by service, development depends on innovation", and we have established an excellent marketing network, including more than 20 offices in major cities across China. Our products are used in thousands of enterprises in water and gas supply and petrochemical industry in 27 provinces in China. A small range of our products have entered the international market.
