Top Entry Ball Valves By Lishui Y & B Valve Co., Ltd.

The floating ball top entry ball valve of Y&B Company is a kind of ball valve whose trims can be replaced and maintenance can be made on the pipeline. The creativity comes from the gate valves and globe valves. The ball and seat are installed through the middle flange vertical to the axis of flow channel. The top entry ball valves of Y&B Company include low platform type and high platform type.
Design standards and product range

a Design basis: ASME B16.34/API608
a Face-to-face dimension: ASME B16.10
a Flanged ends: ASME B16.5
a Butt-welding ends: ASME B16.25/
a Socket welding ends: ASME B16.11/
a Wall thickness: ASME B16.34
a Fireproof test: API607
a Inspection and test: API6D/API598
a Product range: 1/2"~8", DN15~DN200
a Materials of main parts: WCB, CF8, CF8M, WC6, WC9

Design features :

a ISO5211 platform design is adopted for the convenience of installing the actuator
a Antistatic design between stem, body and ball
a Anti-blow-out stem design
a The pressure balancing hole is provided on the steel ball
a The low platform products adopt packing gland type middle shaft
a The double-layer stem packing and double butterfly spring structure of the high platform products play a self-compensation function for the middle shaft seal
a The body is provided with a device for cleaning the valve cavity
a According to the structural forms, the valves include butt-welding type, socket welding type, flanged type and screwed type.