Cast Iron Concentric Butterfly Valve

Products Description :

The cast iron concentric butterfly valve, also known as the flap valve, is a simple regulating valve and can also be used for switching control of low pressure pipeline media. When the cast iron butterfly valve is at the middle opening degree, the shape of the opening formed by the valve body and the front end of the disc is centered on the valve shaft, and the two sides are formed to complete different states. The front end of the butterfly plate moves in the direction of the water flow, and the opposite side flows in the opposite direction. Therefore, the one side valve body and the valve plate form a nozzle-like opening, and the other side is similar to the orifice-shaped opening, the nozzle side has a much faster flow rate than the throttle side, and the negative pressure is generated under the throttle side valve. Rubber seals tend to fall off.

CAST IRON CONCENTRIC BUTTERFLY VALVE

Product Specifications :

QUICK DETAILS

1) Model Number: cast iron butterfly valve

2) Material: Casting

3) Port Size: 2"-36"

4) Normal pressure: Class 150-class 300

5) End flange dimension: ASME B16.5

6) Face to face dimension: API 609

7) Inspection and test: API 598

8) Pressure-temp rating: ASME B16.34

9) Design & Manufacture: API 609

10) Temperature of Media: Medium Temperature

11) Color: Blue or as per the client's request

SPECIFICATION

1) It is reliable in sealing. The more it closes, the tighter the sealing. It is suitable for medium pressure pipes with t he nominal pressure between 16MPa and 40MPa

2) At the time of opening, the disc can separate itself from the seat promptly, thus the friction torque is low

3) The adjustment can be done for compensation if the valve seat is worn, thus prolonging the service life

4) The sealing face of the valve seat is made of PTFE, which is suitable for a temperature between -30º C and 230ºC

STANDARDS

1. DESIGN AND MANUFACTURE: API 609

2. FACE TO FACE DIMENSIONS: API 609

3. FLANGE ENDS DIMENSIONS NPS1/2”~24”: ASME B16.5

4. PRESSURE-TEMPEARTURE RATINGS: ASME B16.34

5. PRESSURE: CLASS 150

6. SIZE: NPS 2″~16″

MATERIAL LIST

GEAR OPERATOR, ELECTRICAL OPERATOR, PENUMATIC OPERATOR, HYDRAULIC OPERATOR ETC.ARE AVALIABLE

NOTE: OTHER METERIALS ARE AVALIABLE UPON REQUEST

PRODUCTION PROCESS

Foundry → Casting →Machining → Assembling → Testing → Painting → Finished valve → Packing

PACKAGING & DELIVERY

Packaging details : electric actuated butterfly valve: the strong plywood cases or as per the customer's request.

Delivery details  : 4-5 weeks after receipt of down payment by T/T

Payment ： T/T, L/C, Western Union and PayPal