Pn6-Pn10-Pn16-Pn25-Class125-Class150 Double Flanged Double Offset Eccentric Butterfly Valve with Pneumatic Electric Actuator Gate Check Valves

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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.

We are confident that we would be your best choice if you are looking for Pn6-Pn10-Pn16-Pn25-Class125-Class150 Double Flanged Double Offset Eccentric Butterfly Valve with Pneumatic Electric Actuator Gate Check Valves manufacturer with class-leading quality and professional services. We are looking forward to establish long-term, mutual beneficial partnership with even more customers with our professional attitude, leading-edge craftsmanship and quality services. We use advanced production resource management system and warehouse management system to implement strict quality management for our products. Looking forward to the future, we will continue to take 'Quality First, Customer First' as our business tenet, and constantly innovate and improve our products to meet market needs. Based on technological advantages, we will improve service quality and provide new and old customers with better product quality.