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SCAR composite sewage exhaust valve

SCAR composite sewage exhaust valve

  • Model:SCAR-10/SCAR-16/SCAR-10Q/SCAR-16Q/SCAR-25Q/SCAR-10P/SCAR-16P/SCAR-25P
  • Specification:DN15-DN250
  • Temperature:≤80℃
  • Medium:Water and media similar to water.
  • Pressure:PN1.0-PN2.5Mpa
  • Connection method:flange connection
  • Driving method:automatic (float lever drive)
  • Material:Cast iron, ductile iron, stainless steel
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SCAR composite sewage exhaust valveOverview

Overview

SCAR composite sewage exhaust valve is a high-performance exhaust valve specially developed for sewage, wastewater, and suspended solids medium pipeline systems. It has undergone comprehensive reinforcement design on the basis of standard composite exhaust valves, ensuring reliable high-speed exhaust, micro exhaust, and automatic air replenishment functions even under harsh working conditions containing fibers, particles, and corrosive components through anti blocking structures, enhanced corrosion-resistant materials, and optimized gas-liquid separation chambers. This effectively solves the problems of air resistance, air hammer, and negative pressure damage in sewage pipelines, and guarantees the continuous and stable operation of the system. Specially applied to the highest point or local protrusion of pipeline systems containing solid impurities and corrosive gases, such as municipal sewage treatment plants, industrial wastewater pipelines, mine drainage systems containing slag slurry, food processing wastewater pipelines, and building and domestic sewage risers. It is an essential key equipment for ensuring smooth exhaust and safe operation of such complex medium pipeline systems.

SCAR composite sewage exhaust valve product diagram

SCAR composite sewage exhaust valveCharacteristic


Features:

1. Exclusive anti blocking design

By adopting a large aperture exhaust port, installing a built-in filter or anti entanglement cover, and optimizing the movement path of the floating ball, it effectively prevents impurities such as fibers, hair, and solid particles in the sewage from entering the valve chamber or entanglement mechanism, and eliminates blockages.

2. Strong corrosion resistance and pollution resistance

The main overcurrent components of the valve body are made of stainless steel (such as 304, 316) or lined with special engineering plastics, and the seals are made of EPDM or fluororubber, which can withstand the corrosion and adhesion of hydrogen sulfide, organic acids, and various chemical substances in sewage.

3. Efficient gas-liquid separation structure

The valve chamber is designed with a flow guide and buffer structure, which can promote gas-liquid separation, ensure that the medium entering the exhaust mechanism is relatively clean, reduce the influence of impurities on the precision float and sealing pair, and improve the reliability of the operation.

4. High displacement and fast response

In response to the possibility of higher gas production from sewage, the exhaust channel has been optimized to provide greater exhaust capacity; Simultaneously using weighted or specially shaped floating balls to ensure sensitive response to changes in medium density or viscosity.

5. Easy to maintain and cleanValves are usually designed with detachable covers or inspection ports, which facilitate quick opening for internal flushing, inspection, and replacement of vulnerable parts, reducing maintenance difficulty and time costs in harsh environments.    

SCAR composite sewage exhaust valvestructure principle

Structural diagram of SCAR composite sewage exhaust valve

Component name and material

序号NO部件名称Component Name材料名称Material Name
1阀 体Valve bodyQT450WCBCF8CF8MCF3M
2阀 盖valve coverQT450WCBCF8CF8MCF3M
3排 气 防Exhaust preventionQT450WCBCF8CF8MCF3M
4活 塞Piston304304304316316L
5顶 塞Top plug304+NBR304+NBR304+NBR316+NBR316L+NBR
6浮 球Floating ball304304304316316L
7垫 圈 环Gasket ringNBR/EPDMNBR/EPDMNBR/EPDMNBR/EPDMNBR/EPDM
8杠 杆 架Leverage frame304304304316316L
9杠 杆Leverage304304304316316L


SCAR composite sewage exhaust valvetechnology parameter

Performance Specification Sheet

公称压力PN(MPa)Nominal pressure PN (MPa)0.61.01.62.52.0
壳体强度试验压力(MPa)Shell strength test pressure (MPa)0.91.52.43.753.0
高压水密封试验压力(MPa)High pressure water seal test pressure (MPa)0.661.11.762.752.2
低压水密封试验压力(MPa)Low pressure water seal test pressure (MPa)0.020.020.020.020.02
法兰标准Flange StandardGB/T 17241.6-2008、JB/T 79-2015、GB/T 9113-2010、ASME B16.5-2017等
检验试验inspection testGB/T 13927-2008、API 598-2016
适用介质Applicable Medium污水、原水或物理化学性质类似于水的其他液体Sewage, raw water, or other liquids with physical and chemical properties similar to water
工作温度Operating Temperature0℃ ~ 80℃


SCAR composite sewage exhaust valvestandard size

Standard requirements for external dimensions

1. The structural length of the valve shall be in accordance with the standard GB13927

2. Connecting flanges according to the standard GB/T 17241.6

Outline drawing of SCAR composite sewage exhaust valve

外形尺寸表 Outline dimension table

公称通径 DN(mm)Nominal diameter DN (mm)DD1D2HZ-∮d
501601252054954-18
801951602706004-18
1002151802857608-18
1502802403408608-22
20033529540010108-22
250390350465121012-22