EMERSON. SEMPELL HIGH PRESSURE STOP AND CHECK VALVES MODEL NICO 4000Designed for all application of stop valves in nuclear power plants up to a nominal diameter of two inches.FEATURES • Die-forged body • Antinit DUR 300 hardfaced seat (Co-free) • Stem nut drive sealed against contamination • Visual position indicator • Low driving forces • Low pressure loss • Simple on-line actuator mounting • Designed for stall torque conditions • Earthquake resident • References in German Pressurized Water Reactor Sweden & Finland BWR, Russian Pressurized Water Reactor (VVER) TECHNICAL DATA Pressure rating: Up to class 2500 / PN 400 Temperature: up to +400°C GENERAL APPLICATIONS The high pressure stop valve series NICO 4000 contains different designs including valves with bellows and check valves with spring. The valves are installed in all steam and water systems of a NPP using different actuators, electrical or pneumatically, additionally there are the option of a lot of accessories. Emerson.com/FinalControl © 2017 Emerson. All Rights Reserved VCTDS-08556-EN 19/02

SEMPELL HIGH PRESSURE STOP AND CHECK VALVES MODEL NICO 4000 Easy actuation change-over. Capsuled valve yoke for protection against environmental influences. Equipped with a mounting flange acc. to ISO 5210. No additional adaptor needed. An electric actuator can be easily fitted while the valve is in service. Thermal extension compensation by cup springs. Low friction roller bearings for small driving forces. Capsuled valve yoke for protection against environmental influences. Visual position indicator. Stripper-ring sealing of packing protects the stem/packing area against dirt and avoids leakage....

ALL standard bodies are die-forged and available in carbon steel and stainless steal, Parts are manufactured according to customer's specification and nuclear requirements. The bodies are purchased with double-certified materials. This enables SempeLL to deliver those valves with DIN- or ASME- materials. DESIGN The body of this standard valve is a die-forged, one-piece body, that means the bonnet is an internaL part of the body, without additionaL cover seaL. The vaLve is prepared for the additionaL mounting of eLectricaL or pneumatically actuators. SIZE NVS y2 - 2 / DN 15 - 50 PRESSURE RATING...

DESIGN In comparison to the standard model the two-piece body has an integrated backseat. The separate bonnet is attached to the body by large screw-necked-down-bolts. The stem is assembled into the bonnet from below with packing. SIZE NVS y - 2 / DN 15 - 50 PRESSURE RATING Class 2680 / PN 420 BODY MATERIAL Different special materials available on request DESIGN Bellows valves are available for applications requiring extreme tightness to outside. Designed for high pressures and temperatures, the bellows is braced by cylindrical intermediate piece and welded to the bottom of the non-rotating stem....

SEMPELL HIGH PRESSURE STOP AND CHECK VALVES MODEL NICO 4000 MATERIALS ASME / DIN Part name Body Body seat Welding neck flange Welding neck flange Spacer Bonnet / Cover Screw bolt Hexagonal nut Disc Stud Hexagonal nut Stem Balanced bellows Base ring Packing Packing Gland shaft Gland flange Stripper Nameplate Notched nail Guide bush Sealing ring Allen screw Threaded bush Cover Parallel key Handwheel Retaining ring Lock washer Sealing ring Cup spring Disc ring Needle bearing Split ring Ring Guide bolt Hexagonal nut Washer Eye bolt Slotted pin Stud Gasket Guide bush Spring Snap ring • = commissioning...

Shell Test max. 400 barg NOTES: Allowable working pressure (barg, plain welding ends) For type 111-246 allowable pressures are limited by bellows SA182F347 / 1.4550 with carbon content <=0,03 Other materials on request

FLANGES ACC. TO ASME / DIN SPECIFICATIONS DIMENSIONS / WEIGHT (mm/kg) SOCKETWELD ENDS ACC. TO ORDER REQUIREMENTS ASME B16.11 (mm) Model Class max. Required dimension for mounting with handwheel or maintenance BUTTWELD ENDS ACC. TO FORMER DIN 3239 PN * acc. to requirements Socketweld on request * acc. to order requirements / entsprechend Bestellerangaben

SEMPELL HIGH PRESSURE STOP AND CHECK VALVES MODEL NICO 4000 ACCESSORIES

Designation Copper free materials Sealing water gland (lantern ring) Valve yoke with connection acc. to ISO 5210 size F10/F14 Connection for linear actuator acc. to DIN 3358 Connection for linear actuator special design Electrical limit switches for position indicator Handwheel with pad lock Stellited disc seat Stem and threaded bush nitrided Welding rings inlet and outlet side Welding ring inlet side Designation Welding ring outlet side Throttling disc, inlet below disc Back seat Spring-loaded gland Nameplate operating pressure in MPa Nameplate, foreign language Lubrication of stem thread Inlet...

Valve type 110-212 HP stop valve with stuffing box 111-212 HP stop valve with stuffing box (special material) 111-246 HP stop valve with bellows 211-231 HP piston check valve Pressure rating weld end 100-400 PN 100-400 Accessories Standardized accessories MATERIAL SPECIFICATION Material DIN - No. Neither Emerson, Emerson Automation Solutions, nor any of their affiliated entities assumes responsibility for the selection, use or maintenance of any product. Responsibility for proper selection, use, and maintenance of any product remains solely with the purchaser and end user. Sempell is a mark owned...