Cast Steel Butterfly Valve

Cast Steel Butterfly Valve

Cast Steel Butterfly Valve A butterfly valve is from a family of valves called quarter-turn valves . In operation, the valve is fully open or closed when the disc is rotated a quarter turn. The "butterfly" is a metal disc mounted on a rod. When the valve is closed, the disc is turned...

Product Details

Cast Steel Butterfly Valve

 A butterfly valve is from a family of valves called quarter-turn valves. In operation, the valve is fully open or closed when the disc is rotated a quarter turn. The "butterfly" is a metal disc mounted on a rod. When the valve is closed, the disc is turned so that it completely blocks off the passageway. When the valve is fully open, the disc is rotated a quarter turn so that it allows an almost unrestricted passage of the fluid. 

There are different kinds of butterfly valves, each adapted for different pressures and different usage. The zero-offset butterfly valve, which uses the flexibility of rubber, has the lowest pressure rating. The high-performance double offset butterfly valve, used in slightly higher-pressure systems, is offset from the centre line of the disc seat and body seal (offset one), and the centre line of the bore (offset two). This creates a cam action during operation to lift the seat out of the seal resulting in less friction than is created in the zero offset design and decreases its tendency to wear. The valve best suited for high-pressure systems is the triple offset butterfly valve. In this valve the disc seat contact axis is offset, which acts to virtually eliminate sliding contact between disc and seat. In the case of triple offset valves the seat is made of metal so that it can be machined such as to achieve a bubble tight shut-off when in contact with the disc. Import cheap goods from China.

Main Parts and material
Parts NameMaterial
BodyGrey Iron
DiscGrey Iron
StemCarbon Steel
Eye ringRubber

Function and Specification
ItemNominal PressureStrength (water)Enclose (water)Working tempratureMedium
D71X1.0Mpa1.5Mpa1.1Mpa<120Steam, water


Outling and Connect Measurement
ItemDN(mm)Measurement (mm)

Sales service:

Improve customer's whole value, let customers not have worry.

(1) Help users to draft the initial construction scheme.

(2) Rigging up and debugging.

(3) Train the attenbant live.

(4) Patrol and examine the equipment regularly.

(5) Fast voluntarily , arrange the reason live.

(6) Guarantee the fittings and deliver goods to the customers.

(7) Follow-up service of the key project .

(8) Look for and unsatisfied with users potentially actively, complain about recycle treatment.

(9) Offer the overbalanced service.

(10)Offer the chance of the exchange of technology.

(11)Launch great items of maintenance business.


With first-class machining centers and processing equipment

Applying new industries to comply with national and industry standards

Quality is stable: carry out the whole process quality control, meticulous and omnidirectional detection.

The fluid resistance is small, and the seal is eroded and eroded by the medium. Opening and closing is more labor-saving.

Simplify the selection process and increase the flexibility of system design, installation and maintenance.

Advanced automated production equipment, sophisticated assembly line production

A growing sense of quality and a steady stream of valve boutiques



Q1: We are interested in your products?
A1: In order to recommend you suitable products, please provide detail information, like size, material, pressure, model.
Q2: Is the requirement for MOQ?
A2: For some small size, like 1/4''-1''(DN6-DN25), it request the MOQ is 50pcs for each size. Generally speaking, it depends on your order.
Q3: How about the warranty?
A3: The warranty time is 18 months after leaving our factory. We can repair or change because of the quality problems.
Q4: Payment
A4: Mainly T/T, Western Union & PayPal are applicable for us. Payment Term: 30% prepayment, 70% balance paid before shipping or against copy of BL.
Q5: Can you manufacture different standards valves according to customer requirements?
A5: Yes. We can manufacture API,DIN,GOST,JIS standards for different pressure & temperature & size according to different needs.
If you want to know more about our products, please contact freely. We will patiently answer your all questions.


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