Linear Pneumatic Actuator (knife gate valves)

We will always adhere to the business philosophy of high-quality products, high-quality services, and high-quality prices to create a better future with users, contribute to the development of Block And Bleed Valves, Pressure Seal Bonnet Forged Gate Valve, FRPP Butterfly Valve industry, and become a world-class enterprise with international competitiveness. Relying on the domestic and foreign markets, our company actively carries out product development and research. We have formed a virtuous circle of research and development, reserve generation and production generation in product research and development. We are adhering to the business tenet of "creating an enterprise trusted by customers" and the management policy of "quality is the life of an enterprise".

Product Details

NSV Pneumatic knife gate valve,it means that pneumatic actuator control the valves to open and close,which have up and down parts,up part is actuator,down part is knife gate valve.

Pneumatic knife gate valve has the advantages of simple and compact structure, reasonable design, light material saving, reliable sealing, flexible operation, small volume, smooth passage, low flow resistance, light weight, easy to install, easy to disassemble and so on. It can work normally under the working pressure of 1.0MPa-2.5MPa and the operating temperature of -29-650℃. Knife-type gate valve has the function of shearing, which can scrape off the adhesive on the sealing surface and remove the sundries automatically. Stainless steel gate can prevent sealing leakage caused by corrosion.

Applicable Standard
Design Standard: MSS SP-81, ANSI, API, ISO, DIN, EN, JIS etc.
End Flange: ASME B16.5, ASME B16.47, DIN2533

Products Range
Size: 2" to 48"(DN50 to DN1200,larger diameters on request)

Flange Connection

EN1092 PN10,PN16,PN25
ANSI B16.5 (class 125,150)

Materials
Body Materials: Ductile Iron, Stainless Steel, Duplex and Special Alloys
Knife Gate: Stainless Steel, Duplex and Special Alloys

Seat: Resilient(EPDM,NBR,PTFE) or Metal Seat
Operation: Pneumatic actuator.

Precautionary Measures

Valve Position

The valve can be assembled in any position,however we recommend suitable position as bellow:

Knife gate valve assembly way

The valve is unidirectional is must be installed with the pressure which push the knife on the gasket.The flow direction is user responsility.Please assemble the valve following the arrow on the body(hydraulics applications).

Repair and Maintenance

Take old packing out

Put 3 layers of packing in the place

Note that each joint of the packing should be in different places

Replacement of valve seat

A.Unscrewed packing gland and remove the gate

B.Remove retainer ring

C.Take the old EPDM ring out and clean it’s place

D.Put new EPDM ring in the place

E.Put ratainer on the EPDM ring

F.Put gate back and packing in valve body

G.Assemble the packing gland and tighten the screw

FAQ

1.Q: What’s the brand of your company manufacture ?

A:NSV or OEM service

2. Q:Does your company have any agent/distributor with the exception of China?

A: At present,we have agent in Indonesia,Singapore,Canada,Mexico,Iraq,and welcome contact us if you would like to join us.

3. Q:Are you manufacturer or trading company?

A: We’re manufacturer,but our factory name is not named NSV due to we’re professional in promotion NSV brand with best service,and also have sold to many end user success.

We usually believe that one's character decides products' high quality, the details decides products' excellent, with the REALISTIC, EFFICIENT AND INNOVATIVE staff spirit for Linear Pneumatic Actuator (knife gate valves). We have modern management mechanisms, advanced processing equipment, perfect testing methods, high-quality scientific research personnel, and considerate after-sales tracking services. We provide customers with advanced and economical services with a high degree of professionalism. Over the past years, our company has developed into an outstanding representative of the industry through honest operation and scientific planning.