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wenzhou ouwei technology co.,ltd
OUWEI Double Interlocking Switch Safety Valve
OUWEI Double Interlocking Switch Safety Valve
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Description:
Product Description
I. Summarize:
Double interlocking switch safety device is a new product independently developed by Luofu based on the original safety valve and changeover valve. According to the design of API520 and BS1873, the inlet and outlet of the safety valve on the pipeline can be switched jointly, allowing for simultaneous opening and closing. This instruction primarily introduces the changeover valve. About the safety valve, please refer to our Operating Instructions for Spring Type Safety Valve.
II. Use & Performance Specification
Double interlocking switch safety device is a new product independently developed by Luofu based on the original safety valve and changeover valve. According to the design of API520 and BS1873, the inlet and outlet of the safety valve on the pipeline can be switched jointly, allowing for simultaneous opening and closing. This instruction primarily introduces the changeover valve. About the safety valve, please refer to our Operating Instructions for Spring Type Safety Valve.
II. Use & Performance Specification
2.1. Use: The product is widely applied as an overpressure protection device on the
corrosive medium and non-corrosive medium pipelines such as water, oil, natural gas
and steam. It has the advantages of small flow resistance, flexible opening/closing,
long service life, superior safety and reliability and compact structure, it is able to achieve following functions:
<1. Non-stop operation. While one safety valve is operating, the other can be
taked down for maintenance on the premise of non-stop operation so as
to achieve the maximum economic profits due to reduce the shutdown
period.
<2. Two safety valves share one pipeline, which can reduce both the pipeline
number and cost.
<3. The inlet and outlet changeover valve of the safety valve are allowed for
synchronous operation as well as simultaneous opening/closing, making
the operation more easily and reliably.
2.2. Scopes of application: chemical industry, petroleum refining, oil and natural
gas pipeline transportation, etc.
2.3. Performance standard (changeover valve):
2.3. Performance standard (changeover valve):
|
Pressure
Grade(Lb)
|
Normal temperature test pressure (MPa) |
Applicable
temperature
(ºC)
|
Applicable media | ||
| Shell |
Pressurization
and upper seal
|
Low
pressure seal
|
|||
| 150 | 3.0 | 2.2 | 0.6 | -29~300 | Water,gas, oil |
| 300 | 7.5 | 5.5 | 0.6 | -29~300 | Water,gas, oil |
