Langsongkeli (Shanghai) Instrument Co., Ltd
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FMZ type valve
This product is a connection device between SF6 density relay and SF6 gas chamber. After assembly, it allows power maintenance personnel to calibrate
Product details

This product isSF6Density relay andSF6The connection device of the air chamber, after assembly, allows power maintenance personnel to operate without disassembling the deviceSF6The verification or replacement of gas density relays completely solves the problem of disassembly during relay verification, replacement, and gas replenishment, avoiding damage to the switch sealing surface and sealing ring caused by disassembling the joint during regular verification, greatly reducing the probability of leakage, improving work efficiency, and ensuringSF6Safe operation of electrical switches.

FMZ Valve

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1. Do not disassembleSF6Density relay is sufficient forSF6Verify or replace gas density relay

2. No need to disassemble screws, one person can operate independently, which is convenient, labor-saving, and time-saving

3. Convenient for on-site personnel to perform micro water and air replenishment operations on the switch

4. Avoiding damage to the sealing surface and sealing ring caused by disassembly


1. Valve seat materialAluminum alloy/copper alloy/stainless steel

2. Nominal diameter:68The12 mm(Medium voltage equipment)

20mm(High voltage equipment)

3. Surface treatment: Aluminum alloy: oxidation treatment

Copper alloy, stainless steel: not treated

4. Working temperature: -40°C~ +60°C

5. Leakage rate:1×10-8Pa·m3/s


Interface size: customizable

Nominal diameter: customizable

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