http://www.asianproducts.com/hotproduct/manufacturer_non-return-valve_.htm non return valve AsianProducts directory for non return valve - It includes sources from non return valve manufacturers and non return valve suppliers, and those qualified non return valve manufacturer are extensively from china, Taiwan, Hong Kong. Wed, 19 Jun 2013 09:01:44 +0800 Copyright 1986 - 2013 Media Federal Co. Ltd. All rights reserved. http://www.asianproducts.com/product/A13304967886571878_P13305869097112135/api-cast-steel-swing.html Delivery program/Technical specifications Material : WCB.WCC.LCB.CF8.CF8M.CF3.CF8C. CN7M Dimension: 2" -- 30" Pressure class: Class150LB--1500LB Features: Design and manufacture: ANSIB16.34, API...<a href="http://www.asianproducts.com/company/A13304967886571878/zhejiang-wanda-valve.html" target="_blank" title="ZHEJIANG WANDA VALVE CO., LTD">ZHEJIANG WANDA VALVE CO., LTD</a> Thu, 01 Mar 2012 15:29:33 +0800 P13305869097112135