Purpose
This High quality 4 inch resilient seated ductile iron gate valve is mounted on various pipelines and used as a bi-way closed circuit equipment for tap water,sewage treatment,metallurgy,petroleum,building,chemical,electric power etc.industries.
Features
1.Such a design as the dustproof ring plus three layers of o-seal ring makes the sealing
reliable and on-line replaceable.
2.The design with an aluminum bronze bearing inlaid in the gate leaves a good self-lubrication and a high strength.The said bearing can be replaced without need to    
replace the integral gate when worn out after a long time use.
3.The gate is wrapped with rubber,anti-corrosion and good at tightness.
4.Advanced surface treatment,coated with harmless epoxy resin static powder ,
anti-corrosion,non-pollution,can be used in a drinking pipeline.
5. The body is gate-slot free designed,the channel is smooth without causing impurities to be piled up,more suitable for sewage working condition.
6. Reliable integral sealing,zero-leak for high pressure sealing under 1.5times of PN and for low pressure sealing under 0.02Mpa.
Executive standard
Design and manufacture standard:DIN3352 F5
Face to face length:DIN3202/ISO5752
Size of flange:DIN2501/GB-17241
Test and inspection:DIN3230/JB-T9092
Technical Datesheet

Dimensions