904L Sleeve Plug Valve

NSV 904L Sleeve Plug Valve

The NSV 904L austenitic sleeve plug valve features a one-piece PFA sleeve bonded to the plug. Sealing is achieved through elastic deformation of the sleeve—no lubrication, zero maintenance, and no metal contact with process media. Ideal for high-purity or highly corrosive services.

Key Features

Body material: 904L stainless steel

Valve type: Sleeve Plug Valve — lubrication-free, maintenance-free, metal-isolated

Operation: 90° quarter-turn, low torque, smooth actuation

Pressure rating: Class 150 / 300 / 600 / 900 / 1500 / 2500

Size range: 1/2"–20" (DN15–DN500)

Actuation: Handwheel or Gear

Operating temperature: -70°C to 200°C (PFA lined); -20°C to 300°C (metal seat)

Suitable media: Concentrated H₂SO₄, HCl, HF, chlor-alkali, high-purity chemicals, steam

Performance Advantages

Lubrication-free: No grease contamination — suitable for pharma, food, semiconductor

Full isolation: Media never contacts metal, eliminating corrosion and ion leaching

Self-cleaning flow path: Smooth PFA surface resists crystallization and fouling

Bi-directional sealing: No flow direction restriction

Low operating torque: Easy manual or automated operation

Extended service life: Superior to traditional metal-seated plug valves in corrosive services

904L construction ensures structural integrity even at Class 2500 in aggressive acids

Typical Applications

Refinery sour service, sulfuric acid transfer, HCl regeneration, chlor-alkali cells, semiconductor wet benches, biopharma formulation, offshore chemical injection.

Quality Assurance

Tested per API 598 / ISO 5208. EN 10204 3.1 MTC provided. Cast body meets international high-grade stainless standards.

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:How can I get a quote?

A: If you request quote by preparing the product spec you want to request specifically through “Contact us or Feedback” of homepage, we will send reply to you ASAP. If the contents of homepage are not available, you can inquire to us via phone(86-577-67378616) or fax(86-577-67372367). 

3. Q:How can I get your company catalog?

A: For your reference, basic catalogue is same as "Download>E-Catalog” of homepage. If you need printed material or request more specific data like PQ material, please contact sales team.

4. 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.