The diaphragm valve is a special globe valve with shut-off function. Its open-close accessory is made of: Steel petal and soft material, valve inner cavity and cavity of cover ater separated to cut-off the medium in the pipe.
Basic series are G41f46 weir valve and G45F46 diaphragm valve, the characteristics are as follows:
1. Complex septum separate the lumen under part and cavity of cover, it will separate the pole of valve, petal of valve and medium, the packing stuff are omitted, the inner leakage and outer leakage are avoided simultaneously.
2. The diaphragm, made by the fluoroplastic lined FEP and synthetic rubber and the valve with fluoroplastic liner are applied to all kinds of serious erosive medium except"fuse alkali metal and Felement"
3. The diaphragm regard as executing element is easy cracked because of frequent start and close, so that it must be exchanged regularly.
4. The erosion-proof performance of fluoroplastic lined and usage temperature recommended is placed in"the fluoroplastic lined used by the valve and pipe accessory. "
According to standard GB12239, BS5156
Way of drive: Manual, pneumatic, power-drive
Zhejiang Dafulong Valve Co., Ltd is located in OuBei Zhangbao industrial Zone, first established in 1977. It is a professional manufacture of Fluouroplastic Lined and Erosive-proof valve and all kinds of pipelines accessory with more than 20 years experience. It has provided anti-erosive valve of superior quality and high performance for th national key projects such as Shanghai petrochemical company, JinZhou refinery and XinJiang DuShanZhi refinery ect. Parts of our products far sell to west European, North America and Southeast Aisa market.
For so many years, we center on the field of fluoroplastic erosive-proof valve, insisting on the market policy; "oriented by market, develop by technology". After wide market diagnoses and through the unceasing efforts of the technicians, several kinds of the products with unique form have been researched and developed. The products are widely used at the sales market because of the special technical guideline and meterials.
At present the main products are: Fluoroplastic lined cock valve, butterfly valve, ball valve, globe valve, check valve, daiphragm valve, gate valve and so on, with 10 pressure classes and more than 1120 specifications. The types of driven are: Manual, pneumatic, electric, worm whell and gear-driven. The design and manufacture of the products are in accordance with the GB, JB and ANSI, API, BS, DIN advanced standard. They are used as the start up and close equipments for the industrial pipelines systems with string ensive medium.
In order to further improve the quality of products to fit in with the request of market competition and keep pace wihe with international, we have made a series of strice enterprise standard and rules, thus management and product quality come to a new stage. At the same time, it has obtained:
@ISO9001 certificate
@National Petroleum & Chemical Industry Bureau Fluorine-plastic Lining Valves Pointing Production Unit Certificate.
@National Nonmetal Chemical Industry Devices Standardization Technology Committee Member.
@China Valve Academician Uni.
@2000 production quality verify eligibility certificate.
@API spec. Q1 (production quality authentication in procession).
