FMZ Connection Valves
The FMZ Connection Valves is a connecting device of SF6 density monitor to SF6 switch gear. The maintenance personnel can inspect SF6 density monitor or replace jt without disassembling the device from installed switchgear. It provides a solution to gas density monitor inspection, replacement and gas filling, without damage to the sealing surface and seal rings of the switch caused by disassembling of valves in the process of regular checks. Therefore, it can reduce the leakage rate, improve the work efficiency, and ensure the safe operation of SF6 electrical switch.
Drawing of FMZ Connection Valves

Application of FMZ Connection Valves
SF6 Gas Insulated Swithchgear (GIS)
SF6 Insulated Circuit Breaker
SF6 Insulated Pole-Mounted Switch
SF6 Insulated Transformer
SF6 Insulation Current Transformers or Voltage Transformers
SF6 Insulated Bus System
Feature of FMZ Connection Valves
The SF6 density meters can be inspected/replaced without disassembling the SF6 meter/monitor
Operation can be done by one person alone without removing screws, convenient, labor – saving and time-saving
Easy for personnel on site to make micro-water detection and gas filling
Avoid the damage to sealing surface and seal rings due to disassembling
High-quality stainless steel with good looking appearance, never get rusted
With stainless steel rain cover, it can resist rain and sun, greatly improving the reliability and service life of the density relay
Technical Data of FMZ Connection Valves
· Valve Material: Aluminium /Copper alloy/ Stainless steel
· Nominal bore: DN6、DN8、DN12、DN20 etc.
· Surface Finish: Aluminium – anodized
Copper alloy – natural
AISI304 stainless steel-natural
· Ambient conditions: -40°C to +70°C
· Leakage rate: Needle valve:≤1×10-8Pa·m3/s
Ball valve:≤1×10-9Pa·m3/s
· Operating pressure range:0~1.6MPa
· Maximum withstand pressure:6.4MPa
Options
· Pressure connections: customizable
· Nominal diameter: customizable
· Valve type:needle valve or ball valve
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