The Non-Rising Stem (NRS) Wafer Type Knife Gate Valve is a space-saving isolation solution designed for tight installations. Unlike rising stem models, the internal screw remains within the valve height during operation, making it ideal for underground pits or areas with overhead obstructions. Its Wafer body and beveled gate effectively cut through slurries and solids. The NRS design protects the stem threads from external debris and corrosion, ensuring reliable performance in wastewater and mining.
Technical Attributes: NRS Wafer Knife Gate Valve
Stem Design,Non-Rising Stem (NRS) / Internal Screw
Body Material,Ductile Iron GGG50 / WCB / SS304 / SS316
End Connection,Wafer Type (Space-Saving)
Pressure Rating,PN10 / PN16 / Class 150
Size Range,DN50 - DN1000 (2" to 40")
Gate Material,AISI 304 / 316 / 316L (Beveled Edge)
Seat Material,EPDM / NBR / PTFE / Metal-to-Metal
Sealing Type,Unidirectional or Bidirectional
Operation,Manual Handwheel / Bevel Gear / Electric
Design Standard,MSS SP-81 / ASME B16.34
Face-to-Face,MSS SP-81 (Short Pattern)
Packing Material,PTFE / Braided Graphite / Synthetic Fiber
Stem Material,SS304 / SS420 / ASTM A182 F6a
Temperature Range,−20℃ to +120℃ (Resilient Seat)
Coating,Fusion Bonded Epoxy (Min. 250 Microns)
Testing Standard,API 598 / MSS SP-81
Applicable Media,"Sewage, Slurry, Paper Pulp, Bulk Powders"
Actuator Mounting,ISO 5211 (Optional for Automation)
Contact: Jorge Yang
Phone: +86-13588258503
E-mail: sales@fluvalve.com
Whatsapp:+86-13588258503
Add: Room 331, South Building,Building 1, No.3 Jinpeng Street, Sandun Town, Xihu District, Hangzhou City, Zhejiang Province
