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The SRG type 481 manual isolation filler valve is designed for fats filling of large static tanks and domestic storage tanks containing LPG. Valves are fitted with a resilient seat disc as the main closure, supported by a metal-to-metal back check valve for added security. The addition of a manually operated ball valve between the two closures on models 481-420-1 and 481-421-1 further improves security.

When the manual isolation valve is opened, both back checks are opened by the flow of liquid and close automatically when the flow stops. Suitable for design pressure op to 30 bar and temperatures from -20°C to 65°C.

As standard, valves are supplied with a screw cap made from tough molded plastic which can withstand tank pressure. The cap has a lug with a hole to facilitate the use of a tamper evident wire and lead seal.

Options available:
  • A cap lock preventing unauthorized removal of the cap and pirate filling
  • Specifications
    Inlet1 ¼ " NPT  
    Outlet1 ¾ "-6 ACME  
    Width across flats46 mm  
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