Double Acting Actuator Pneumatic Knife Gate Valve

We mainly commit to the integrated demand and supply of Forged Globe Valves, Pneumatic Cast Iron Butterfly Valve, Sleeve Plug Valves for domestic and foreign enterprises, relying on a mature supply chain system, customer management system and strong capital support. With more than a decade in the field, we are committed to meeting the needs of our customers from different industries in terms of quality, delivery, cost-effectiveness and any other demanding requests. We continue to promote lean production, continuously improve the process and enhance management capabilities. Our company firmly believes that excellent quality can stand the test of time and perfect service can always eliminate the worries of customers. We strive to build a learning enterprise, create a good learning atmosphere, and create superior learning and communication conditions for our employees.

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.

Our company adheres to the customer-oriented and application-oriented strategy, and continues to focus on development in the field of Double Acting Actuator Pneumatic Knife Gate Valve. We are enthusiastic to provide you with satisfactory service and look forward to working with you to develop together. Our company has carried out a series of technological innovations over the years, continuously expanding the scale of production and expanding the scope of services. Based on the world market is our long-term management policy, and making our company an internationally renowned brand is our ultimate goal.