Twt Factory Supply Ggg50 DN200 PN10 Air Release Valve


Compound Exhaust Valve




Export Plywood Box


18 Monthes

Product Description

Basic information

TypeCompound   Exhaust ValveMediaDuctile Iron
CertificationCE, ISO9001,BVBig and Old   Valve Facotry65 Production   History
SizeDN200OEM&ODMCustomer   Request
Coating EpoxyPressure PN16
Design   StandardEn1074-4Applicable   SizeDN25-DN300
Valve BodyCastingStandardAPI609/DIN3354/BS5155/En593
Body MaterialDuctile   Iron/Wcb/Stainless SteelPackingExport Plywood   Box
Testing100%   Inspections Before Leaving FactoryWarranty18 Monthes
Transport   PackageExport Plywood   BoxTrademarkTWT


Product Description

Twt Factory Supply Ggg50 DN200 Pn10 Air Release Valve

The features of exhaust air relief valve
1.Exhaust process more smoothly
steady air release can avoid pressure surge and protect pipline damage

2.More autonomous working mode
The air relief valve can release air when filling water in pipe,enter air to get rid of negative pressure when vacuum or negative pressure exists

3.More reliable way of discharge
Quick released air and air with water will not close valve orifice in advance and cause air seal,Orifice will close when air is released completely

4.Automatic protection safer performance
Whenever if system pressure is lower than atmosphere ,water column happened,the air relief valve will open immmediately and air will enter system to get rid of negative pressure,at the same time,entering air can speed up the speed of air release during air release

Product Parameters

TWT Exhaust air relief valve can be devided in to
High speed compound air release valve
Slow closing inlet and outlet air relief valve

Main materials:cast iron,ductile iron,stainless steel
Connection type:Thread,Flang

Inspection and maintenance program

Close cut-off valve under air release valve
Take off the connection bolts between valve body and cover use water to clear floaing ball ,body,cover,sealing ring and creen
The floating ball is put back in place,install the valve cover,tighten the bolts
Open the cut-off valve

Installation and maintenance

Valve should be installed vertically in the pipeline highest point
The cut-off valve(butterfly valve or gate valve) should be installed before air release valve
Check and maintenance is recommened for one or two times in one year,the work can increase according to water condition

Main materials

Screen coverSS304/SS316
ScreenStainless steel
RetainerStainless steel
Float ballStainless steel
Guide pinStainless steel
BodyDuctile iron/WCB/Stainless steel
CoverDuctile iron
Leverage bracketStainless steel
Air-ventStainless steel/brass
Floating ball leverStainless steel
ConnectiontubeStainless steel




Our Advantages

• More than 60 years of valve production experience
• with advanced processing equipment
• large testing laboratories
• and sufficient raw material reserves


Q1.Whether it is a factory?
A:yes we are valve manufacture since 1956 have more than 60 years valve production experience
Q2.Can i have any own customized product?
A:yes you are customized requirements for standard,size,colour,packing,nameplate,mark,etc
Q3.Do you provide samples?
A:yes we can provide the samples but do not pay the charge of freight
Q4.What’s your terms of payment?
A:30% in advance 70% balance before shipment
Q5.Is there any testing equipment
A:Yes, we have pressure testing equipment, and large-scale laboratories and non-destructive testing equipment