Flanges & Fittings Section Two 2 2.1 Chain Clamp Components & Hardware 2 2.2 NW Flanges & Fittings 5 2.3 ISO Flanges & Fittings 15 2.4 ASA Flanges & Fittings 24 2.5 CF Flanges & Fittings 31 2.6 Wire Seal Flanges 54 2.7 Adapter Fittings 55 2.8 Flexible Hoses & Couplings 64 2.9 Weld Fittings 72 Nor-Cal Products, Inc. Tel: 800-824-4166 1967 South Oregon Street or 530-842-4457 Yreka, CA 96097 USA Main Fax: 530-842-9130 Sales Fax: 530-841-9189 www.n-c.com SECTION 2.1 Flanges & Fittings 2 Chain Clamp Component General Information SPECIFICATIONS Tube OD sizes: 3/4 to 4 inches (19.05 to 101.6mm) Materials Flange: 304 stainless steel Seal: Aluminum Vacuum range: >1 x 10-11 mbar - UHV Temperature range: -270ºC to 150ºC All dimensions are in inches and (mm) unless otherwise noted Nor-Cal Products stocks a complete Aluminum Metal Seals Large NW Flanges line of chain clamps and aluminum Aluminum seals locate on the Nor-Cal offers blank and bored NW-63, metal seals for converting elastomer seal centering ring groove (inner centering) NW-80 and NW-100 flanges that are NW (KF) and ISO flanges to UHV metal or outside edge of the flange (outer compatible with other manufacturers’ seals. They provide a number of benefits centering) depending on the size. large QF, KF flanges made to the ISO 2961 over elastomer seals: reduced outgas- (Inner and outer centering versions are specification. They can be used with chain sing, no permeation, no hydrocarbons, available for all NW flange sizes.) clamps to form elastomer or aluminum resistance to radiation and short half-life. Aluminum knife-edges are compressed by metal seals. Elastomer seals are formed Aluminum seals are used in high-energy the sealing surfaces of the mating flanges with standard ISO centering ring/O-ring physics, other UHV applications and, when the chain clamp or ISO assemblies and elastomer chain clamps. in some circumstances, cryogenic claw clamp is tightened. The resultant UHV connections are formed with alu- applications. Aluminum seals are reliable seal has a helium leak rate of less than minum metal seals and chain clamps in high vibration or temperature cycling 1x10 -11 standard mbar l/sec and can be intended for use with them. NW flanges environments. Chain clamps and NW baked repeatedly to 150˚C. Proper seal- are made from 304 stainless steel for flanges are the standard vacuum flange ing occurs even if the flanges are slightly 2.5 to 4.0 inch (63.5 to 101.6mm) OD for many Japanese semiconductor equip- scratched or misaligned. The aluminum tube sizes. Flanges for tube sizes up to 28 ment manufacturers. The advantages alloy is soft enough to make a good seal inches (711.2mm) OD, metric tube sizes over using the standard ISO flange are with reasonable force but will not flow at can be supplied. the time and space savings during moderate temperatures. Seals will even assembly and the flexibility to form high work with aluminum flanges. vacuum or UHV seals. To install a metal seal on an existing NW flange, simply remove the stan- Chain Clamp dard clamp, centering ring and O-ring assembly. Replace them with an aluminum knife edge seal and chain clamp. (See diagram.). Standard ISO claw clamps can be used with alumi- num seals to convert ISO flanges from high vacuum to UHV. Nor-Cal’s large NW flanges are available in 63, 80 and 100 NW sizes from stock. Chain clamps are used to form either elas- tomer or metal seals with large NW flanges. Aluminum Knife Edge Seal 2 Ultra-High Vacuum Components Since 1962 • www.n-c.com Flanges & Fittings SECTION 2.1 Metal Seals & Flanges 2 .175/.157 Diagram A .276 (4.445/3.734) (7.010) Aluminum Metal Seals for NW 16-63 Flanges A B MODEL NUMBER DIAGRAM FLANGE A B C D NW-16-MS-A A NW-16 1.18 (29.97) 0.63 (16.00) - 0.91 (23.11) NW-25-MS-A A NW-25 1.58 (40.13) 0.96 (24.38) - 1.30 (33.02) D NW-40-MS-A A NW-40 2.16 (54.86) 1.58 (40.13) - 1.89 (48.01) NW-50-MS-A B NW-50 - 1.97 (50.04) 2.05 (52.07) 2.32 (58.93) .173/.157 Diagram B .276 NW-63-MS-A B NW-63 - 2.68 (68.07) 2.76 (70.10) 3.03 (76.96) (4.394/3.988) (7.010) C B Aluminum Metal Seals for NW 80-100 Flanges D MODEL NUMBER FLANGE A B NW-80-MS-A NW-80 Tapered 4.49 (114.05) 4.25 (107.95) .098/.079 .236 (2.489/2.007) (5.994) NW-100-MS-A NW-100 Tapered 5.28 (134.11) 5.04 (128.02) A B Aluminum Metal Seals for ISO Flanges MODEL NUMBER NUMBER FLANGE A B TORQUE CLAMPS* ISO-63-MS-A ISO-63 3.74 (95.00) 3.47 (88.14) 11.3 Nm 4 .177/.157 .276 (4.496/3.988) (7.010) ISO-80-MS-A ISO-80 4.33 (109.98) 4.06 (103.12) 11.3 Nm 6 A ISO-100-MS-A ISO-100 5.12 (130.05) 4.84 (122.94) 11.3 Nm 8 B * Use with Nor-Cal double or single claw clamps. .200 (5.080) C NW-63 Flanges B .470 .250 (6.350) MODEL (11.938) NUMBER DESCRIPTION A B C D E D E 1 NW-63-250 Bored for 2 /2 inch (63mm) tube OD 3.43 (87.12) 2.44 (61.98) 2.76 (70.10) 2.51 (63.75) 2.71 (68.83) A NW-63B Blank 3.43 (87.12) - 2.76 (70.10) - - NW 80-100 Flanges .453 (11.506) MODEL C NUMBER DESCRIPTION A B C D E B .787 .590 (14.986) NW-80-300 Bored for 3 inch (75mm) tube OD 4.49 (114.05) 2.87 (72.90) 3.27 (83.06) 3.01 (76.45) 3.82 (97.03) (19.990) NW-80B Blank 4.49 (114.05) - 3.27 (83.06) - - D NW-100-400 Bored for 4 inch (100mm) tube OD 5.28 (134.11) 3.87 (98.30) 4.02 (102.11) 4.01 (101.85) 4.61 (117.09) E A NW-100B Blank 5.28 (134.11) - 4.02 (102.11) - - 3 Ultra-High Vacuum Components Since 1962 • www.n-c.com SECTION 2.1 Flanges & Fittings 2 Chain Clamps Nor-Cal Products stocks chain clamps of the non-sealing side. Most manufac- seals has a single hex head nut. for NW flanges in two styles: one with turers’ NW flanges have this feature. If Both have uncoated aluminum links, Teflon coated aluminum links and an the flanges to be sealed have a sharp although Teflon coated aluminum uncoated version. The less expensive edge, the Teflon coated chain clamps are versions are available. uncoated version is the preferred choice required to ensure adequate sealing force for sealing standard NW flanges with for aluminum metal seals. Both versions Chain clamps for 80 to 100mm flanges aluminum metal seals. The uncoated use a single, hex head nut for closure. are stocked in two styles: one with chain clamps can be used with Nor-Cal or Stainless steel chain clamps and low cost a single knob for elastomer seals and other manufactur- composite chain clamps are available for another with two allen head bolts ers’ NW flanges elastomer NW connections. for aluminum metal seals. Although chain clamps are bakeable to 150˚C, the with a radius of Radius approximately .060 Chain clamps for NW-63 flanges are knobs should not be baked above 60˚C. .060 of an inch similar to the NW-16 to 50 sizes. The style Chain clamps for tube sizes up to 28 (1.5mm) on to use with NW-63 elastomer seals has a inch (711mm) OD can be supplied on the outer edge single knob for tightening. The clamp request. Diagram A used for sealing aluminum metal A .787 (19.990) B Chain Clamps for NW-16 to 50 Flanges – Aluminum Links MODEL MAXIMUM TORQUE NUMBER DIAGRAM APPLICATION A B TEMPERATURE ELASTOMER / METAL NW-16-CC-AN A Metal or Elastomer Seals 4.53 (115.06) 2.36 (59.94) 150°C 1.017 Nm / 2.486 Nm .157 (3.988) NW-25-CC-AN A Metal or Elastomer Seals 4.92 (124.97) 2.76 (70.10) 150°C 1.469 Nm / 2.938 Nm NW-40-CC-AN A Metal or Elastomer Seals 5.32 (135.13) 3.35 (85.09) 150°C 2.034 Nm / 4.406 Nm NW-50-CC-AN A Metal or Elastomer Seals 5.98 (151.89) 4.13 (104.90) 150°C 2.486 Nm / 4.971 Nm A Diagram B .787 * (19.990) Chain Clamps for NW-16 to 50 Flanges - Teflon Coated Links B MODEL MAXIMUM TORQUE NUMBER DIAGRAM APPLICATION A B TEMPERATURE ELASTOMER / METAL NW-16-CC-TN A No radius, metal/elastomer 4.53 (115.06) 2.36 (59.94) 150°C 1.017 Nm / 2.486 Nm NW-25-CC-TN A No radius, metal/elastomer 4.92 (124.97) 2.76 (70.10) 150°C 1.469 Nm / 2.938 Nm NW-40-CC-TN A No radius, metal/elastomer 5.32 (135.13) 3.35 (85.09) 150°C 2.034 Nm / 4.406 Nm .157 (3.988) NW-50-CC-TN A No radius, metal/elastomer 5.98 (151.89) 4.13 (104.90) 150°C 2.486 Nm / 4.971 Nm *Not radiation resistant Diagram C 200 1.50 Chain Clamps for NW-63 Flanges (38.10) MODEL MAXIMUM TORQUE NUMBER DIAGRAM APPLICATION A B TEMPERATURE ELASTOMER / METAL NW-63-CCV-AN B Elastomer seals only 6.69 (169.93) 4.72 (119.89) 100°C - NW-63-CC-AN A Metal or elastomer seals 6.30 (160.02) 4.72 (119.89) 150°C 2.486 Nm / 4.971 Nm B Chain Clamps for NW-80 to 100 Flanges MODEL MAXIMUM NUMBER DIAGRAM APPLICATION A B TEMPERATURE TORQUE NW-80-CCV-AS D Elastomer seals only 9.61 (244.09) 6.06 (153.92) 150°C - Diagram D A NW-80-CC-TS C Metal seals only - 6.30 (160.02) 150°C 8.474 Nm 1.50 200 (38.10) NW-100-CCV-AS D Elastomer seals only 10.08 (256.03) 6.77 (171.98) 150°C - NW-100-CC-TS C Metal seals only - 7.09 (180.09) 150°C 9.943 Nm B All dimensions are in inches and (mm) unless otherwise noted 4 Ultra-High Vacuum Components Since 1962 • www.n-c.com Flanges & Fittings SECTION 2.2 NW Flange General Information 2 SPECIFICATIONS 3 Tube OD sizes: /8 to 2 inches (9.53 to 50.8mm) Materials Flange: 304 or 316L stainless steel O-rings: Viton, Buna & silicone Fittings Tube finishes: Beadblast standard (Tumbled & electropolish available) Fasteners: Wing nut, SureSeal, bulkhead & chain clamps Vacuum range Elastomer seal: >1 x 10-8 mbar -High vacuum Metal seal: >1 x 10-11 mbar - UHV Temperature range Viton: -20ºC to 200ºC Silicone: -50º to 230ºC Buna: -30ºC to 110ºC Metal seal: -270˚C to 150˚C Nor-Cal NW flanges are designed to ISO application of uniform pressure from O-rings.