Nor-Cal N-Series User Manual
N-Series
Isolation Poppet Valves
NAP
NAP-075
NAP-100
NAP-150
NAP-200
NAIP
NAIP-075
NAIP-100
NAIP-150
NAIP-200
N-Series OP-LIT 10-2011
Nor-Cal Products, Inc.
1967 South Oregon Street
Yreka, CA 96097 USA
Tel: 800-824-4166
or 530-842-4457
Fax: 530-842-9130
www.n-c.com
N-Series Isolation Poppet Valves
Table of Contents
1.0
Introduction .............................................................................................................................................................
Safety ...................................................................................................................................................................... 3
2.0
2.1
Symbols Used.............................................................................................................................................................3
2.2
Precautions ................................................................................................................................................................
Specifications ..........................................................................................................................................................
3.0
Description of N-Series Valves ................................................................................................................................................... 6
4.0
Overview .
4.1
Theory of Operation ................................................................................................................................................... 6
4.2
4.3 Valve & Options Nomenclature ..................................................................................................................................................... 7
5.0
Installation and Use ................................................................................................................................................7
5.1
Unpacking and Detrashing .........................................................................................................................................7
5.2 Valve Installation ........................................................................................................................................................ 8
5.3 Pneumatic Hook-Up ..................................................................................................................................................8
5.4 Solenoid Pilot Valve Connection ................................................................................................................................. 8
5.5 Position indicator Electrical Connection ..................................................................................................................... 9
6.0
Troubleshooting ......................................................................................................................................................9
6.1 Valve Will Not Close and Remains Fully or Partially Open ............................................................................................ 9
6.2 Valve Will Not Open All The Way or At All ................................................................................................................10
6.3 Valve Does Not Seal Adequately As Measured Between Inlet and Outlet Ports .........................................................10
6.4 Vacuum System Will Not Pump Down To Base Pressure ............................................................................................10
6.5 Position Sensors Are Not Sending Open / Close Signals ............................................................................................ 10
6.6 Valve Makes Noise ................................................................................................................................................... 11
6.7 Air Supply Pilot Valve Is Leaking or Makes Noise .......................................................................................................11
7.0
Spare Parts & Accessories ..................................................................................................................................... 11
7.1 O-ring Seal Kits with Work Instructions .................................................................................................................... 11
7.2 Valve Rebuild Kit with Work Instructions ..................................................................................................................13
7.3 Replacement or Add-On Solenoid Valve Kit with Work Instructions .......................................................................... 13
7.4 Replacement or Add-On Position indicator Kit with Work Instructions ..................................................................... 14
8.0 Product Support & Returns
Appendix - Limited Warranty and Intellectual Property ..................................................................................................17
................................................................................................................................................................................... 6
....................................................................................................................................... 15
3
3
4
List of Tables
3.1 Environmental Specifications .......................................................................................................................................................... 4
Operational Specifications .......................................................................................................................................... 4
3.2
3.3 Certification
3.4
Pneumatic N-Series Angle Valve Dimensions ..............................................................................................................5
3.5
Pneumatic N-Series Angle In-Line Valve Dimensions ...................................................................................................5
.................................................................................................................................................................4
List of Figures
3.4.1
Valve Dimensions ....................................................................................................................................................
4.2.1
4.3.1
5.4.1 Solenoid Valve Connection .....................................................................................................................................8
5.5.1 Position indicator Electrical Connection ..................................................................................................................9
22
Cut-away Valve ...........................................................................................................................................................................7
Valve & Options Nomenclature ................................................................................................................................7
Information in this manual is subject to change without notice.
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5
N-Series Isolation Poppet Valves
1.0 - Introduction
Thank you for purchasing an N-Series isolation poppet valve from Nor-Cal Products. Before installing and operating the product, please read this manual
thoroughly as it contains critical hook-up and operating tips. In addition, this manual contains detailed information on spare parts, options and valve accessories.
If you encounter any problems, or if you have any questions, please contact Customer Service.
Nor-Cal Products, Inc.
1967 South Oregon Street
Yreka, CA 96097 USA
Phone: +1 (530) 842-4457
Toll Free: +1 (800) 824-4166
On-line: www.n-c.com
2.0 - Safety
2.1 Symbols Used
Throughout this manual, information that is of particular importance to the installation, the safety of operating personnel and the protection of equipment are
highlighted by the following three symbols. The WARNING symbol is also used on the equipment wherever necessary.
NOTE: Calls attention to helpful tips about proper
installation, maintenance or use of the controller.
CAUTION: Highlights areas of concern that, if overlooked, could
result in damage to the controller or surrounding equipment.
WARNING : Alerts the installation, operating or maintenance
personnel of hazardous aspects of the controller, which, if
ignored could result in serious personal injury or death.
2.2 Precautions
When installing, using or servicing this product please adhere to the following precautions.
WARNING:
WARNING:
REPAIR & MAINTENANCE: Use only Nor-Cal replacement parts for product maintenance and repair,
and adhere strictly to rework instructions outlined in this manual.
PRODUCT ALTERATION: Do not alter or modify the product without first consulting with Nor-Cal
Products’ product management or applications engineering staff.
CAUTION:
WARNING:
NOTE:
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MATERIAL COMPATIBILITY: Make sure to understand the compatibility between hazardous and
reactive process chemicals and the product’s materials of constructions.
OPERATION: The product’s moving parts present a severe pinching hazard. Please keep fingers,
hands or other objects away from all ports and openings.
INSTALLATION: Use proper installation hardware and mating components. In particular, make sure
that electrical connectors and pneumatic supply fittings are selected in accordance with the instructions
in this manual.
3
N-Series Isolation Poppet Valves
3.0 - Specifications
The following figures and tables summarize specifications of the N-Series vacuum valve.
TABLE 3.1 ENVIRONMENTAL SPECIFICATIONS
FEATURE SPECIFICATION
Installation Orientation Product may be installed in any orientation, with gas flow in either direction.
Ambient Operating Temperature Range 32
Allowable Ambient Humidity 0
Process Temperature Range 0
Heating Capabilities Body can be heated up to 302o F (150o C) with optional heater kits.
Maximum internal Pressure 20 psi (138 kPa).
Maximum delta-P across poppet 30 psi (206 kPa) in open direction. 35 psi (241 kPa) in closing direction.
FEATURE SPECIFICATION
Open / Close speed 0.5 seconds to open, 0.7 seconds to close at 80 psig.
Pneumatic Supply 60
Solenoid Electrical Specifications 120 VAC: 2.5 Watt (-S11 option code)
Position Indicators Optical: Standard NPN type (-0 option code)
Reliability 3 million cycles MTBF at 90% confidence factor, clean environment
o
– 122oF (0oC – 50oC)
– 95% non-condensing
o
F – 392o F (-18o C – 200o C). Process temperatures above 302o F (150o C), may require use of seal materials other than
Viton®.
TABLE 3.2 OPERATIONAL SPECIFICATIONS
– 100 psig (414 – 689 kPa) CDA or N2.
Standard connection accepts 5/32” [4MM] OD tubing.
Thread is 10-32 [M5].
24 VDC: 1.8 Watt (-S21 option code)
240 VAC: 4.0 Watt (-S31 option code)
24 VAC: 4.0 Watt (-S41 option code)
Optical: Optional PNP type (-02 option code)
TABLE 3.3 CERTIFICATION
FEATURE SPECIFICATION
Leak Rate 1 x 10-9 atm.scc/sec He (for valves with Viton® seals)
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N-Series Isolation Poppet Valves
MODEL
NUMBER
NAP-075 0.75 No Flanges 1.42 (36) 3.95 (100) 4.90 (124) 1.6
NAP-075-NW 0.75 NW-16 1.57 (40) 4.10 (104) 5.05 (128) 1.7
NAP-075-CF 0.75 CF-133, Rotatable 1.91 (49) 4.73 (120) 5.68 (144) 1.9
NAP-100 1.0 No Flanges 1.82 (46) 4.35 (110) 5.30 (134) 1.6
NAP-100-NW 1.0 NW-25 1.97 (50) 4.50 (114) 5.45 (138) 1.7
NAP-100-CF 1.0 CF-212, Rotatable 2.28 (58) 4.81 (122) 5.76 (146) 1.9
NAP-150 1.5 No Flanges 2.41 (61) 4.94 (125) 5.89 (149) 1.6
NAP-150-NW 1.5 NW-40 2.56 (65) 5.09 (129) 6.04 (153) 1.7
NAP-150-CF 1.5 CF-275, Rotatable 2.62 (67) 5.15 (131) 6.09 (155) 1.9
NAP-200 1.5 No Flanges 2.61 (66) 5.14 (131) 6.09 (155) 1.6
NAP-200-NW 1.5 NW-50 2.76 (70) 5.29 (134) 6.24 (158) 1.7
NAP-200-CF 1.5 CF-338, Rotatable 2.84 (72) 5.37 (136) 6.32 (160) 1.9
TABLE 3.4 PNEUMATIC N-SERIES ANGLE VALVE DIMENSIONS TABLE
PORT OD DESCRIPTIO N
A B C
TABLE 3.5 PNEUMATIC N-SERIES ANGLE IN-LINE VALVE DIMENSIONS TABLE
MODEL
NUMBER
PORT OD DESCRIPTI ON
A B
NAIP-075 0.75 No Flanges 3.64 (92) 4.60 (117) 1.7
NAIP-075-NW 0.75 NW-16 3.94 (100) 4.60 (117) 1.8
NAIP-075-CF 0.75 CF-133, Rotatable 4.20 (107) 4.60 (117) 2.0
NAIP-100 1.0 No Flanges 3.64 (92) 4.00 (102) 1.7
NAIP-100-NW 1.0 NW-25 3.94 (100) 4.00 (102) 1.8
NAIP-100-CF 1.0 CF-212, Rotatable 4.75 (121) 4.00 (102) 2.0
NAIP-150 1.5 No Flanges 4.82 (122) 4.37 (111) 1.7
NAIP-150-NW 1.5 NW-40 5.12 (130) 4.37 (111) 1.8
NAIP-150-CF 1.5 CF-275, Rotatable 5.24 (133) 4.37 (111) 2.0
NAIP-200 1.5 No Flanges 5.21 (132) 4.37 (111) 1.7
NAIP-200-NW 1.5 NW-50 5.51 (140) 4.37 (111) 1.8
NAIP-200-CF 1.5 CF-338, Rotatable 5.66 (144) 4.37 (111) 2.0
WEIGHT
(Lb.)
WEIGHT
(Lb.)
FIGURE 3.4.1
B
0.95 (24)
2.77 (70)
C
B
A
2.77 (70)
0.95 (24)
A
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5
N-Series Isolation Poppet Valves
4.0 Description of N-Series Valve
4.1 Overview
Nor-Cal Products N-Series valves are pneumatically operated bellows sealed poppet valves, designed for light weight and compact size as well as robust operation and long life. The pneumatic valve is controlled by a pneumatic cylinder located inside the top of the valve body for extra low profile and envelope size. The
valve closes by use of an internal spring. Supplying compressed air to the pneumatic cylinder opens the valve. In the event of a power or pneumatic failure the
valve closes automatically, and is therefore considered a “normally closed” or “fail close” design.
The electropolished 304 stainless steel valve body is available in a right angle or angle in-line configuration with a selection of flange types. Customer specific
flange arrangements and combinations are available upon request, as are a variety of O-ring seal types. Viton is the default elastomer material used.
Optional position indicators can be ordered with the valve, or they can easily be installed as a retrofit at the user’s site. The position indicators are mounted on a
small circuit board that resides in a molded slot in the valve top cover. No adjustment or bracket hardware is needed for the position indicator installation.
An air solenoid operated pneumatic valve may also be ordered with the valve. This valve allows electrical control of the N-Series valve while it is connected directly to the user’s pneumatic supply. The solenoid valves are available in 24 VDC as well as 24, 120 and 240 VAC varieties.
4.2 Theory of Operation
Figure 4.2.1 illustrates the components of the pneumatic N-Series valve. From its normally closed position, the valve is opened when compressed air is applied to
the pneumatic cylinder through the 10-32 [M5] female port (usually fitted with a 5.32” [4mm] quick disconnect fitting) in the valve stem). When the pneumatic
pressure in the cylinder reaches a level sufficient to overcome the force of the spring, the piston starts to rise, pulling the poppet off of the seat.
The actuator cylinder is vented to allow air from within the bellows to enter or escape as its volume changes. At the lower end of the stem, the poppet is permanently attached to the stem. The poppet includes an O-ring seal residing in a dovetail shaped O-ring groove, which contacts the seat to seal the valve port. The
bellows forms a flexible seal between the poppet and body valve housing.
As long as adequate pneumatic pressure is applied, the piston continues to travel upward, further compressing the spring, until the piston reaches the stop at the
full open position.
To close the valve, the cylinder is vented through the same 10-32 [M5] female port (usually fitted with a 5.32” [4mm] quick disconnect fitting). As the air pressure
falls below the value necessary to counter the spring force at the full open position, the piston and the poppet start to move towards the closed position. As venting continues, the poppet seat reaches the full close, sealed position.
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