Weir type diaphragm valves (400 type)

Products

Weir type diaphragm valves (400 type)

Left: Fully open, Right: Fully closed

Basic diaphragm valves! Excellent corrosion and chemical resistance and a wide range of applications!

Features

This is the basic type of diaphragm valves with weir in the flow path. Close contact between the diaphragm and the weir maintains airtightness and provides high valve seat sealing performance.
Since there are many types of materials for the main bodies and diaphragms, and the materials can be selected according to the composition of fluids such as rubber and fluorocarbon resin, the most suitable selection is available, when high cost performance and corrosion resistance and chemical resistance are required.
Actuators can be selected according to the application as well.

Manual Valve (with handwheel)
400 type
Pneumatically Operated Valve (ON-OFF type)
PO1400N type
Pneumatically Operated Control Valve
BO3400 type
Electrically Operated Valve
MS4400 type

Applicable field

Body specifications

Details of body specifications

In addition to cast iron and stainless steel cast steel, we manufacture lined valve bodies that are suitable for corrosion and chemical resistance and wear resistance.
Suitable selection are available from an extensive lineup according to your usage conditions.
Other special materials are available, please contact our sales representatives.

Standard lineup

400 type
(Flange type)
400L type
(Flange type)(*1)
400Rc type
(Screw type)(*2)
400SW
(Welding type)(*2)

(*1):Metal body, rubber body, polyethylene body only (*2): Metal body only

Body type	Material
Metal body	Gray cast iron, Ductile iron cast iron, Various stainless steels, Hot dip galvanizing, etc.
Rubber lining	Hard natural rubber lining, Soft natural rubber lining, Chloroprene rubber lining, Butyl rubber lining
Synthetic resin lining	PFA lining, ETFE lining, Polyethylene lining
Other	Glass lining, porcelain (ceramic) lining

It is necessary to select the material for the diaphragm valve according to the user's operating conditions. Please refer to the catalog and drawings for the details of the product and the specifications, or contact our sales representative.

Diaphragm specifications

Details of diaphragm specifications

Diaphragms are divided into two types: rubber and fluorocarbon resin.
Our diaphragms are subjected to various tests under severe conditions to confirm their durability and safety. It is highly reliable for external seals and valve seat seals and has been used in a wide range of industries for years.
Suitable selection are available from an extensive lineup according to your usage conditions.