【Company Introduction】:
ZHEJIANG ZHENGFENG VALVE CO.,LTD is one professional Butterfly valve manufacturer in CHINA.Our company is keep innovation, the products are mainly based on ISO, API, ANSI, BS, DIN NF, JIS, GB, JB and other standard production.The operating temperature -196 degrees C, ~680 degrees. The main materials include 304, 304L, 316, 316L, A105, WCB,Hal alloy, LC2, LC3,LCB, C4, 2520, 2205, Monel,alloy steel etc..
【Product Details】:
* Size: 20‘’(DN500)
* Class: 300LB
* Connection Type : Double Flange ends
* Operator: Gearbox
* Body: A216-WCB
* Disc: A351-CF8
* Seal: SS316+Graphite
* Stem: 17-4PH
* Seat: SS316
* Face to face length : 350 mm
* Design standard: API 609
* Color No.: RAL 7040
* Operating Temperature : -29°C~425°C
* Country of origin: CHINA
【Manufacture Precess】:
Our aim is not to allow defective products to injure our brand.Order production process and effective work is the basis for achieving success.We will use advanced processing equipment,topping test equipment to ensure the stability.Below is our zhengfeng valve production flow:
