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Nutork Corp.
NK Pneumatic Actuator

NK Pneumatic Actuator

Product catalog summary

Overview: The document provides comprehensive technical specifications and features of the NUTORK NK Series Rack & Pinion Type Pneumatic Actuators, available in materials such as Aluminum, 304SS, and 316SS. These actuators are designed for various industrial applications, offering a range of coatings for enhanced durability.

Specifications:

Pressure Ranges: Double acting: 2 to 8 bar; Spring return: 3 to 8 bar.
Temperature Ranges: Standard: -20°C to +80°C; Lower Temp: -40°C to +80°C; High Temp: -15°C to +150°C.
Torque Range: 9Nm to 3,920Nm at 6 bar air supply.
Operating Media: Filtered dry or lubricated air, non-corrosive gas, water, or light hydraulic oil.

Construction and Features:

Design: Twin piston rack and pinion suitable for indoor and outdoor use.
Connections: Complies with ISO 5211/DIN 3337 and VDI/VDE-3845, NAMUR standards.
Lubrication: Factory lubricated for life cycle.
Inspection: Each actuator is hydraulically tested and certified for a minimum of 1 million cycles.

Materials and Coatings:

Actuator Body: Hard anodized aluminum with options for Nickel, Ceramic, PTFE, and Polyester coatings.
End Caps: Epoxy coated die-cast aluminum with options for Nickel, Ceramic, PTFE, and Polyester coatings.
Pistons: Hard anodized die-cast aluminum with high-quality rings and guides.

Performance and Adjustments:

Travel Adjustment: ±5° in both open and closed positions.
Springs: High tensile steel, epoxy coated for corrosion resistance.
Bearings & Guides: Durable compound material for stability and long life.

Operating Principles:

Double Acting Actuator: Air to port A causes counter-clockwise rotation; air to port B causes clockwise rotation.
Spring Return Actuator: Air to port A compresses springs; loss of air pressure allows springs to return pistons.

Torque Tables: Detailed torque output tables for both double acting and spring return actuators are provided, showing output at various air supply pressures and spring configurations.

Technical Document Summary:

1. Specifications: This document provides detailed specifications for pneumatic actuators and valves. It includes torque values, dimensions, and pressure ratings for various models such as NK-300, NKS-350, and NKS-400. The torque values are given in Nm, and dimensions are provided in both millimeters and inches.

2. Procedures: The document outlines procedures for operation and installation of pneumatic actuators. It includes operation times, air consumption calculations, and guidelines for air volume during opening and closing cycles.

3. Standards and Norms: The actuators and valves comply with international standards such as ISO5211. The document also mentions approvals from ATEX, NEPSI, IEC, FM, and CSA for various components, ensuring safety and reliability.

4. Recommendations: Recommendations include using specific materials like aluminum or 316SS for housing, and options for high and low temperature seals. It also suggests using air filter regulators and position monitoring switchboxes for enhanced performance.

5. Accessories: Optional accessories include mechanical switches, air filter regulators, and dome type indicators. The document also describes manual override options and solenoid valves for enhanced control.

6. Valves: The document details various types of valves such as ball valves, butterfly valves, and triple offset metal-seated butterfly valves. It provides dimensions, pressure ratings, and operation methods for each type.

7. Dimension Tables: Dimension tables are provided for reference, detailing the size and connection types for different actuator models. These tables are crucial for ensuring compatibility and proper installation.

8. Key Data from Tables: The tables include critical data such as air volume requirements, operation times, and torque values for different actuator models. This data is essential for selecting the appropriate actuator for specific applications.

Overview: This document provides technical specifications for various types of valves manufactured by NUTORK Corp., including dual plate check valves, double union ball valves, and wafer type butterfly valves. It also highlights the materials used and pressure ratings for these products.

Dual Plate Check Valve:

Type: Retainerless Type Metal Seat and Full Liner Rubber Seat
Dimensions: 1-1/2″ to 80″
Pressure Rating: PN10-PN40/ANSI125-150LB/JIS10-20K
Full Liner & Rubber Seat:
- DN40-DN1000, ANSI150LB
- DN40-DN600, ANSI300LB
- DN40-DN300, ANSI600LB~2500LB
Metal Seat (Retainerless Type):
- Dimensions: 1/2″ to 4″
- Materials: UPVC, CPVC, PVDF, PP, ABS
- Seal: PTFE
- O-Rings: EPDM, FPM
- End Type: Threaded/Socket/Flanged

Double Union Ball Valve:

Pressure Rating: 150PSI
Dimensions: 2″ to 24″
Materials:
- Body: UPVC, CPVC, PVDF, PP
- Disc: CPVC, PVDF, PP
- Stem: 410SS, 304SS, 316SS
- Seat: EPDM, FPM
- O-Rings: EPDM, FPM

Wafer Type Butterfly Valve:

Details not specified in the document.

Company Information:

NUTORK Corp. specializes in manufacturing pneumatic and electric actuators and accessories for quarter turn valves.
Contact Information:
- Address: No.10, Lane 899, Zhuguang Road, Qingpu Area, Shanghai, China
- Tel: 021-59887103/59888463/59888436
- Fax: 021-59887203
- Email: [email protected]
- Website: www.nutork.com

Catalog excerpts

Actuators & Valves NK Series Rack & Pinion Type Material in Aluminum / 304SS / 316SS Pneumatic Actuator ard A di d d Hard Anodized 304SS / 316SS body actuators Polyester Coated olyester Nickel Coated Halar Coated PTFE Coated NUTORK CORPORATION

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Pneumatic Actuator - Operating Conditions 1. Pressure Ranges 2 bar(29 psig) to 8 bar(116 psig) double acting 3 bar(44 psig) to 8 bar(116 psig) spring return 2. Temperature Ranges *Std.(NBR O-rings): -20°C(-4°F) to +80°C(+176°F) *Lower Temp. (HNBR O-rings):-40°C(-40°F) to +80°C(+176°F） *High Temp. (Viton O-rings): -15°C(+5°F) to +150°C(+300°F） 6. Note: Special grease is required for low and high temperature service condition. Lubrication All moving parts are factory lubricated s for entire life cycle of actuator. 3. Wide Range Available Twin piston rack and pinion actuator design, suitable for...

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Pneumatic Actuator – NKD032 Parts List Actuator Body Extruded Alluminum Alloy Hard Anodized (over 30um) Nickel or PTFE coated Alloy Steel Nickel Plated (over 15um) Viton / HNBR Viton / HNBR Thrust Bearing(Pinion) Spring Clip Stainless Steel Die Cast Aluminum Alloy Hard Anodized (over 30um) Stainless Steel 10* Stroke Bolt O-Ring Stroke Bolt Washer Stainless Steel Stroke Bolt Retaining Nut Stainless Steel Stroke Bolt Viton / HNBR Viton / HNBR Nickel or PTFE coated Viton / HNBR Stainless Steel Epoxy Coated (over 80um) *Note: Recommended spare parts for maintenance.

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Pneumatic Actuator – NK052~270 Parts List Spring Clip Stainless Steel Thrust Washer(Pinion) Stainless Steel Thrust Bearing(Pinion) Actuator Body Extruded Alluminum Alloy Hard Anodized (over 30um) Die Cast Aluminum Alloy Hard Anodized (over 30um) High Performance Spring Steel Epoxy Coated Stainless Steel Nickel or PTFE coated Viton / HNBR Nickel or PTFE coated Piston Bearing Piston Seal Piston Guide Stroke Bolt Stainless Steel Stroke Bolt Retaining Nut Stainless Steel Stroke Bolt Washer Stainless Steel Stroke Bolt O-Ring Viton / HNBR O-Ring(Top Pinion) Viton / HNBR Bearing(Top Pinion) Thrust Bearing(Pinion)...

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304SS/316SS/Pneumatic Actuator NK052~210 Parts List 1 Description Indicator Screw Indicator Snap Ring Washer Outside Washer Body Piston Piston O-ring Piston Bearing Spring Spring Retainer(L,R) Retainer Connector End-Cap O-ring End-Cap Stop Screw End-Cap Stop Screw Guide Piston O-ring(Adjust screw) Nut(Adjust screw) Adjust Screw Plug Inside Washer Cam Top Bearing Top O-ring Pinion Bottom Bearing Bottom O-ring Material Plastic Plastic Stainless steel Stainless steel Engineering Plastics Stainless steel Stainless steel NBR Engineering Plastics Spring Steel Nylon 66 Brass NBR Stainless steel Stainless...

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Pneumatic Actuator - Double Acting Sizing example of NUTORK double acting actuator: Valve torque 100Nm plus 20% safety factor= 120Nm. Minimum operating pressure 6bar(87psig). By reading down the 6bar(87 psig) column the figure below 120Nm is 135.0Nm, The model number shown in the left hand column is therefore NKD-092. The operating principle of double acting actuator CCW-counter-clockwise Air to port A forces the pistons outwards, causing the piston to turn counter-clockwise while air is being exhausted from port B. Air to port B forces the pistons inwards, causing the piston to turn clockwise...

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Pneumatic Actuator - Spring Return (Fail Safe) Sizing example of NUTORK spring return actuator: Spring to close when air fails(air to open): Valve torque 60Nm plus 20% safety factor = 72Nm. Minimum operating pressure: 6bar(87psig). The spring return NUTORK actuator selected is NKS-105-12.The NKS-105-12 has the following output torques: 1.air torque 0°(valve close) = 122.5Nm > 72Nm 2.air torque 90°(valve open) = 80.6Nm 3.spring torque 90゜ (valve open) = 118.1Nm 4.spring torque 0°(valve close) = 75.9Nm > 72Nm The operating principle of single acting spring return actuator CCW-counter-clockwise...

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Pneumatic Actuator -Torque Table(Nm) unit:Nm Air Supply Pressure(Unit:bar) 4.0 5.0 Air Torque Output(Nm) 0° 90° 0° 90°

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Pneumatic Actuator -Torque Table(Nm) unit:Nm Air Supply Pressure(Unit:bar) 4.0 5.0 Air Torque Output(Nm) 0° 90° 0° 90°

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Pneumatic Actuator - Dimension Table * Dimensions for reference only, subject to change.

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Dimension Tabel Model NKSS-45 NKSS-52 NKSS -63 NKSS -75 NKSS -83 NKSS-105 NKSS -125 NKSS -140 NKSS -160 NKSS -190 NKSS -210 NKSS -240 NKSS -270 NKSS -300 NKSS -400

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Pneumatic Actuator - Technical Data Air Volume @Opening(liter) Air consumption rest with Air supply. Air volume and Action cycle times, expressions L/Min=Air volume(Air volume Opening+Air Volume Closing)X[(Air Supply(Kpa)+101.3)/101.3]X Action cycle time(/min) NK-032 NK-040 Aluminum Alloy Body NKD (Double Acting Actuator) (Spring Return Actuator) 316SS Body NKD-S6 (Double Acting Actuator) NKS-S6(Spring Return Actuator) 304SS Body NKD-S4(Double Acting Actuator) NKS-S4(Spring Return Actuator) Standard: NBR HT High Temperature :Viton LT Low Temperature : HNBR Note: The part numbers are represented...

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Pneumatic Actuator - Accessories 3/2 & 5/2 way in-line & Namur Mounted Solenoid Valve. IEC/ATEX/FM/CSA Approved 1. Spool valve structure 2. Static seal design 3. Material in aluminum & 316SS 4. Encapsulated coil in NASS coil 5. EExdIICT6 coil enclosure in Aluminum & 316SS. Approved by ATEX & NEPSI. Static seal design NEPSI Approved Rotary & Linear Type E/P Positioner 1. The optional output signal: mechanical switch & 4-20mADC feedback 2. The optional accessories: air filter regulator or dome type indicator(only in IP66, rotary type) 3. Enclosure in IP66,EExdIIBT6 & EExdIICT6(Approved by ATEX...

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Pneumatic Actuator - Valves Butterfly Valves Center-Line Soft-Seated Butterfly Valve 1. Wafer/Lug Valve: Dimensions:2″~ 56″ Pressure Rating: PN10-16/ANSI125-150LB/JIS10-16K 2. Double Flanged Valve: Dimensions:2″~ 48″ Pressure Rating: PN10-16/ANSI125-150LB 3. Wafer/Lug Valve (PTFE/PFA Lined): Dimensions:2″~ 24″ Pressure Rating: PN10-16/ANSI125-150LB Operation: Hand-Lever, Wormgear Operator, Pneumatic and Hydraulic Actuators, Electric Actuators. Triple Offset Bi-Directional Metal Seat Butterfly Valve (Bubble Tight, Replaceable Disc Ring & Valve Seat) High Performance Double Eccentric Butterfly...

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NK Pneumatic Actuator

NK Pneumatic Actuator

Catalog excerpts

All Nutork Corp. catalogs and technical brochures