Butterfly Valve
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| Grooved End UL Listed Grooved End Sizes: 2-1/2, 3, 4, 6 & 8 Wafer Type, UL Listed Wafer Type Sizes: 2-1/2, 3, 4, 6 & 8 Universal Wafer Type Butterfly Valve suitable for connecting to ANSI B 16 Class 125, ISO 2084 / Din 2501 PN 16 & BS 4504 PN 16 Flanges. (Conforms to BS 593: 1998) Bronze Valve, UL Listed BG Grooved End Sizes: 2 and 2-1/2 Bronze Valve, UL Listed BT Threaded End Sizes: 1, 1-1/4, 1-1/2, 2 and 2-1/2 Approvals: UL |
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Installation & Maintenance
Design Requirements
The Lifeco grooved butterfly valve should be connected to the piping system with approved coupling or flange adaptors. Flow may be from either direction, and the valve may be positioned in any direction. Lifeco butterfly valves have been designed with a slow close hand wheel operator, which effectively minimizes water hammer. these valves feature minimum flow restriction and pressure loss when in the fully open position.
Care & Maintenance
Lifeco butterfly valves require no regular maintenance, however, it is advisable to inspect and verify proper operation of the unit annually or in accordance with the authority having jurisdiction.
The inspection should include a visual check for leakage at the valve pipe connection and body to operate connection. Inspection and maintenance should be performed by a qualified inspection service.
Installation
When the valves are received from the manufacture they should be handled carefully to avoid breakage and damage to the seating area. Before installation of the valve, clean piping, flange and coupling. When the valves closes hard, it is usually due to debris lodged in the sealing area. Often this may be corrected by backing off the hand wheel and closing again.
The valve should never be forced to seat by applying a wrench to the hadn wheel as this may distort the valve components or score the sealing surface. the use of excessive force to open or close the value violates all warranties whether express or implied.
The inlet and outlet pipe adjacent to the value should be properly supported to prevent excessive stress on the valve body. The valve should not be used to force a pipeline into position as this may result in distortion of the valve body. Conduit and electical connections to the optional tamper switch must be in accordance with National Electrical Code (NFPA 72) and requirements of the local authority having jurisdiction.
Switch Installation
Lifeco butterfly valves are provided with internal supervisor position swiches. The tamper switch operates by a cam connected to the valve stem. The switch will change position and close within two (2) full turn of the hand wheel from the fully open position.
| For connection to the supervisory circuit.
Normally closed : 2 Yellow Normally open : 2 Red Common : 2 White |
Auxiliary switch connected per authority.
Normally closed : 1 Blue Normally open : 1 Orange Common : 1 Black Ground Lead : 1 Green |
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The next step
For more information about Butterfly Valve, either email the sales team or call +44 (0) 870 066 4401.
