Cement Silo Pneumatic Dust Butterfly Valve DN250 Butterfly Valve with Pneumatic Actuator

Our goal is to continuously provide high-quality A494 CW12MW Globe Valve, Metal Seated Floating Ball Valve, Pneumatic Cast Iron Butterfly Valve and services that exceed customer expectations, and to promote the development of the industry with customers all over the world. With excellent quality and comprehensive pre-sale and after-sales service, we have been strongly supported and praised by domestic enterprises from all walks of life and our products are widely used. So we can guarantee our quality seriously and availably. We guarantee that our company will try our best to reduce customer purchase cost, shorten the period of purchase, stable products quality, increase customers' satisfaction and achieve win-win situation.

Product details

NSV Pneumatic Actuator Butterfly Valve which can be used for isolating or regulating flow. The closing mechanism takes the form of a disk. Operation is similar to that of a ball valve, which allows for quick shut off. Butterfly valves are generally favored because they are lower in cost to other valve designs as well as being lighter in weight, meaning less support is required. The disc is positioned in the center of the pipe, passing through the disc is a rod connected to an actuator on the outside of the valve. Rotating the actuator turns the disc either parallel or perpendicular to the flow.

Applicable Standard
Design Standard: API 609, MSS SP-67, MSS SP-68, BS 5155
Face to Face: API 609, ASME B16.10, BS 5155, EN1092
End Connection: ASME B16.5, ASME B16.47
Inspection and Test: API 598

Products Range
Size: 2" ~ 36" (DN50 ~ DN900)
Rating: ANSI 150lb ~ 600lb
Body Materials: Carbon Steel, Stainless Steel, Alloy Steel, Duplex Steel.
Disc Sealing: PTFE, Graphite Laminated
Operation: Lever, Gear, Electric, Pneumatic, Hydraulic

Design Features
Triple eccentric design
Metal to metal,Rubber,PTFE seated
Bi-directional service
Wafer,Lug or Flange Connection

STRUCTURAL FEATURES

THE LAMINATED DISC SEAL

Torque seating during closing of the valve provides uniform forces around the entire circumference of the valve seat.The resilient seal flexes and energizes,assuming the shape of the seat.The compression forces equally distributed around the perimeter provide a tight bi-directional shut off.The resiliency of the seal allows the valve body and disc to contact or expand,without the risk of jamming due to temperature fluctuations.

NSV provides an extra rigid retaining ring with bolting,designed in response to ASME stree calculations.

1) Seat is hardfaced with Stellite as standard.

2) The gasket is spiral wound SS/Graphite for zero leakage.

The torqseal’s advanced design features 3-way eccentricity and unique elliptical seat geometry ensuring compressive sealing around the entire seat and a “tight”,bubble free valve.

Raised,conical seat prevents solid build-up from interfering with the seal.Seat is hardfaced with Stellite to meet severe service(in lieu of soft SS316 hardfacing).

IDENTIFICATION OF THE VALVES BEFORE INSTALL ON PIPELINE

1.Each valve has a stainless steel nameplate fixed to the body.the nameplate is marked with details such as valve size,rating,material of construction and series number of the valve,a typical nameplate is shown bellow:

2.Tag number will also be attached to the valve if requested at the time of order.

FAQ

1. Q: What’s the valves warranty?
A: Our valves warranty period should be 18 months from the date of shipment or 12 months after installation, whichever occurs first.

2. Q:What’s the packing for shipping?

A:Its carton for small valves(sample) and plywood case(don’t to fumigate).

3.Q:Is there have MOQ?

A：No.we can accept 1set,but there have additional cost $150.00(process of export) if the order value within $2000.00.

Every customer's satisfaction with the use of Cement Silo Pneumatic Dust Butterfly Valve DN250 Butterfly Valve with Pneumatic Actuator will bring us a great sense of achievement. We strive to build an excellent team with good professional quality and continuous progress. 'Making better products and creating a more harmonious society' is our solemn commitment to the industry and society. Relying on the support of new and old customers, we will live up to expectations and create a better future.