Severe-Service Union-Bonnet Needle Valves - PDF Free Download

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1 Severe-Service Union-Bonnet Needle Valves N Series and HN Series Working pressures up to psig (689 bar) Temperatures from 65 to 450 F ( 53 to 232 C) with PTFE packing; up to 1200 F (648 C) with Grafoil packing 316 stainless steel; s 400, 20, 600, and C-276; and titanium materials

2 2 Severe-Service Union-Bonnet Needle Valves Features Stem Designs Ball tip (NB)3N, 6N, 12N, and 6HN Regulating (NR)all models PCTFE soft-seat regulating (NKR)all models PTFE soft-seat regulating (NTR)3N, 6N, 3HN, and 6HN Orifice Sizes in. (4.0 mm)3n and 3HN in. (6.4 mm)6n and 6HN in. (11.1 mm)12n Flow Coefficients (C v ) From 0.35 to 2.4 Flow Patterns Straightall models Angle3N, 6N, and 12N Packing bolt design permits packing adjustments in the open position Rolled and plated 316 SS stem threads enhance cycle life Union-bonnet construction prevents accidental valve disassembly Safety back seating seals in fully open position Nonrotating ball stem tip (shown) provides repetitive, leak-tight shutoff; regulating stem tip available Pressure-Temperature Ratings Ratings are based on manual valves with optional Grafoil packing. Ratings are limited to: 200 F (93 C) max with PCTFE stem tip (NKR). 250 F (121 C) max with UHMWPE stem packing. 450 F (232 C) max with PTFE stem tip (NTR) or stem packing. 600 F (315 C) max with PEEK stem packing and 316 SS, 20, 600, C-276, or titanium; 500 F (260 C) max with PEEK stem packing and 400 ( 400 available in N series only). See Stem Packing Materials, page 9, for more information about packing materials. N Series ASME Class 2500 N/A Material Group N/A N/A Material Name 316 SS Alloy 400 Alloy 20 Alloy 600 Alloy C-276 Titanium Temperature, F ( C) 65 ( 53) to 100 (37) 200 (93) 250 (121) 300 (148) 350 (176) 400 (204) 450 (232) 500 (260) 600 (315) 650 (343) 700 (371) 750 (398) 800 (426) 850 (454) 900 (482) 950 (510) 1000 (537) 1050 (565) 1100 (593) 1150 (621) 1200 (648) 6000 (413) 5160 (355) 4910 (338) 4660 (321) 4470 (307) 4280 (294) 4130 (284) 3980 (274) 3760 (259) 3700 (254) 3600 (248) 3520 (242) 3460 (238) 3380 (232) 3280 (225) 3220 (221) 3030 (208) 3000 (206) 2685 (184) 2285 (157) 1715 (118) 5000 (344) 4400 (303) 4260 (293) 4120 (283) 4050 (279) 3980 (274) 3970 (273) 3960 (272) Working Pressure, psig (bar) 5000 (344) 4640 (319) 4500 (310) 4360 (300) 4185 (288) 4010 (276) 3955 (272) 3900 (268) 3790 (261) 3750 (258) 3710 (255) 3665 (252) 3600 (248) 6000 (413) 5600 (385) 5460 (376) 5320 (366) 5220 (359) 5120 (352) 5030 (346) 4940 (340) 4780 (329) 4700 (323) 4640 (319) 4430 (305) 4230 (291) 4060 (279) 3745 (258) 2725 (187) 1800 (124) 1155 (79.5) 770 (53.0) 565 (38.9) 515 (35.4) 6000 (413) 6000 (413) 6000 (413) 6000 (413) 5975 (411) 5880 (405) 5710 (393) 5540 (381) 5040 (347) 4905 (337) 4730 (325) 4430 (305) 4230 (291) 4060 (279) 3745 (258) 3220 (221) 3030 (208) 3000 (206) 2685 (184) 2285 (157) 1545 (106) 3570 (245) 3110 (214) 2840 (195) 2570 (177) 2385 (164) 2200 (151) 2055 (141) 1885 (129) 1625 (111) HN Series (High Pressure) For more information about pressure ratings of valves with tube fitting end connections, see Swagelok Tubing Data, MS Pressure ratings of valves with VCR or VCO fitting end connections are based on the ratings of the mating fitting; see the Swagelok VCR Metal Gasket Face Seal Fittings catalog, MS-01-24, and Swagelok VCO O-ring Face Seal Fittings catalog, MS (VCR and VCO fittings available in N series only). ASME Class Material Group Material Name Temperature F ( C) 65 ( 53) to 100 (37) 200 (93) 250 (121) 300 (148) 350 (176) 400 (204) 450 (232) 500 (260) 600 (315) 650 (343) 700 (371) 750 (398) 800 (426) 850 (454) 900 (482) 950 (510) 1000 (537) 1050 (565) 1100 (593) 1150 (621) 1200 (648) N/A N/A 316 SS Working Pressure psig (bar) (689) (640) (609) (578) (554) (530) (512) (493) (466) (458) (446) (436) (429) (419) (406) (399) (375) (372) (333) (283) (212)

3 Materials of Construction 14a 12a b b Component Wetted components listed in italics. Severe-Service Union-Bonnet Needle Valves 3 Valve Body Material 316 SS Alloy 400 Alloy 20 Alloy 600 Alloy C-276 Titanium Material Grade/ASTM Specification 1 Handle Anodized aluminum 2024T4/B211 2 Handle pin Nickel cadmium-plated steel/a108 3 Set screw Nickel cadmium-plated steel 4 Lock nut 316 SS/A276 or A479 5 Panel nut 316 SS/B783 6 Union nut 7 Packing bolt 8 Gland 316 SS/ A /B SS/A276 20/B /B166 9 Packing supports Glass-filled PTFE 10 Packing PTFE/D Bonnet 12a NTR or NKR soft-seat regulating stem shank 12b Soft-seat tip 316 SS/ A SS/A NR regulating stem Silver- 14a NB ball tip stem shank 14b NB ball stem tip 15 Body Lubricant plated 316 SS/A276 Cobalt-based 316 SS/ A479 Alloy 400/ B /B164 Alloy 20/ B473 20/B473 Alloy 600/ B /B166 C-276/B574 Alloy C-276/ B574 C-276/B574 NTR stemptfe/d1710; NKR stempctfe 400/B164 Alloy 400/ B164, B127, or B564 20/B /B166 C-276/B574 Material must be selected; see Ball Stem Tip Materials, page 5. Alloy 20/ B462, B463, or B473 Alloy 600/ B166 or B564 Alloy C-276/ B564 Nickel antiseize with hydrocarbon carrier (all valves); hydrocarbon-based (NB ball tip) Ti grade 4/ B348 Ti grade 4/ B348 Ti grade 4/ B348 Ti grade 4/ B348 Ti grade 4/ B348 or Ti grade F4/B381 Flow Data at 100 F (37 C) NR, NTR, and NKR Regulating Stems Flow Coefficient at Turns Open Testing Every N series and HN series needle valve is factory tested with nitrogen at 1000 psig (69 bar). Seats have a maximum allowable leak rate of 0.1 std cm 3 /min. Shell testing is performed to a requirement of no detectable leakage with a liquid leak detector. Flow Coefficient (C v ) 12N Series 6N, 6HN Series 3N, 3HN Series Cleaning and Packaging All N series and HN series needle valves are cleaned and packaged in accordance with Swagelok Standard Cleaning and Packaging (SC-10), MS Cleaning and packaging in accordance with Swagelok Special Cleaning and Packaging (SC-11), MS-06-63, to ensure compliance with product cleanliness requirements stated in ASTM G93 Level C are available as an option. Number of Turns Open NB Ball Stem Tip The NB stem is designed to be used in a fully open or fully closed position. See Dimensions for flow coefficients.

4 4 Severe-Service Union-Bonnet Needle Valves Dimensions Dimensions, in inches (millimeters), are for reference only and are subject to change. F N Series Straight pattern G panel hole drill Panel thickness 1/16 (1.6) min, 3/8 (9.5) max H open Angle pattern G panel hole drill F Panel thickness 1/16 (1.6) min, 3/8 (9.5) max D 2 H open Socket weld end connection D 1 B 2 B A B E 1 E 2 B 1 C J End Connections Dimensions, in. (mm) Ordering Inlet/Outlet Size C v Number A B B 1 B 2 C D 1 D 2 E 1 E 2 F G Female NPT 1/8 in. SS-3NBF2 1/4 in. SS-3NBF4 Male NPT 1/4 in. SS-3NBM4 Male/ female NPT Swagelok tube fittings Tube socket welds Male VCO fittings Male VCR fittings 1/4 in. SS-3NBM4-F (52.3) 2.03 (51.6) 3N Series: in. (4.0 mm) Orifice 0.89 (22.6) 1.03 (26.2) 1.03 (26.2) 0.89 (22.6) 1.27 (32.3) 1.38 (35.1) 1.27 (32.3) 1.28 (32.5) 1.09 (27.7) 1.28 (32.5) 0.39 (9.9) 0.39 (9.9) H Straight H Angle 1/4 in / SS-3NBS (27.7) (44.4) (15.1) (77.5) 6 mm SS-3NBS6MM (29.5) (37.6) (39.1) (27.7) (77.5) (61.0) (30.5) 8 mm SS-3NBS8MM 1/4 in. SS-3NBSW4T 1.82 (46.2) 0.91 (23.1) 0.88 (22.4) 1.19 (30.2) 1.25 (31.8) 1/4 in. SS-3NBVCO /4 in. SS-3NBVCR4 (52.3) (26.2) 1.09 (27.7) 6N Series: in. (6.4 mm) Orifice 3.23 (82.0) 3.05 (77.5) 3.23 (82.0) 3.05 (77.5) J 0.28 (7.1) Female NPT 1/4 in. SS-6NBF4 3/8 in. SS-6NBF (57.2) 1.12 (28.4) 1.12 (28.4) 1.50 (38.1) 1.47 (37.3) 3.82 (97.0) Swagelok tube fittings Tube socket welds Pipe socket welds Male VCO fittings Male VCR fittings 3/8 in. SS-6NBS6 1/2 in. SS-6NBS8 10 mm SS-6NBS10MM 12 mm 0.86 SS-6NBS12MM 3/8 in. SS-6NBSW6T 1/2 in. SS-6NBSW8T 1/4 in. SS-6NBSW4P 1/2 in. SS-6NBVCO8 1/2 in. SS-6NBVCR (71.9) 3.04 (77.2) 2.85 (72.4) 3.04 (77.2) 2.25 (57.2) 3.12 (79.2) Dimensions shown with Swagelok tube fitting nuts finger-tight (35.8) 1.52 (38.6) 1.42 (36.1) 1.52 (38.6) 1.12 (28.4) 1.29 (32.8) 1.40 (35.6) 1.30 (33.0) 1.40 (35.6) 1.66 (42.2) 1.65 (41.9) 1.55 (39.4) 1.65 (41.9) 1.25 (31.8) 1.12 (28.4) 1.79 (45.5) 1.90 (48.3) 1.80 (45.7) 1.34 (34.0) 1.22 (31.0) 1.34 (34.0) 1.34 (34.0) 1.90 (48.3) 1.34 (34.0) 1.50 (38.1) 1.40 (35.6) 1.47 (37.3) 0.50 (12.7) 0.50 (12.7) 2.50 (63.5) 25/32 (19.8) 3.70 (94.0) 3.57 (90.7) 3.70 (94.0) 3.70 (94.0) 3.70 (94.0) 0.31 (7.9) 3.76 (95.5) 3.82 (97.0) (38.9) (15.7) (98.8)

5 Ordering Information N Series Select an ordering number. To order other valve body materials, replace SS in the ordering number with a material designator. Example: M-3NBF2 Material Alloy 400 Alloy 20 Alloy 600 Alloy C-276 Titanium Designator M C20 INC HC TI Ball Stem Tip Materials Ordering numbers specify a cobaltbased ball stem tip. N series valves of 316 SS are standard with this stem tip and require no designator. To specify ball stem tip material for valves of other materials, add a designator to the ordering number. Example: INC-6NBF4-HC Angle-Pattern Valves Ordering numbers that list C dimensions are available in angle patterns. To order, add -A to the ordering number. Example: SS-12NBF8-A Severe-Service Union-Bonnet Needle Valves 5 Ball Stem Tip Material/ ASTM Specification Cobalt-based Options and Accessories Designator -STE 440C SS/A C Alloy 400/B127 or B164 -M Alloy 20/B463 or B473 -C20 Alloy C-276/B574 or B575 Titanium/B348 or B265 -HC -TI See page 9 for information about optional stem packings, stem designs, handles, and sour gas valves. End Connections Dimensions, in. (mm) Ordering Inlet/Outlet Size C v Number A B B 1 B 2 C D 1 D 2 E 1 E 2 F G Female NPT Male/ female NPT Swagelok tube fittings Tube socket welds Pipe socket welds Male VCO fittings Male VCR fittings 1/2 in. SS-12NBF8 3/4 in. 2.4 SS-12NBF12 1 in. SS-12NBF16 1/2 in. SS-12NBM8-F8 3/4 in. 1.9 SS-12NBM12-F12 1 in. SS-12NBM16-F (79.2) 3.25 (82.6) 3.62 (91.9) 3.12 (79.2) 3.25 (82.6) 3.62 (91.9) 1/2 in. 3/4 in. 2.1 SS-12NBS8 SS-12NBS (99.6) 1 in SS-12NBS16 (104) 12 mm 1.9 SS-12NBS12MM 3.92 (99.6) 12N Series: in. (11.1 mm) Orifice 1.62 (41.1) 1.81 (46.0) 1.62 (41.1) 1.81 (46.0) 1.96 (49.8) 2.04 (51.8) 1.96 (49.8) 1.31 (33.3) 1.31 (33.3) 1.68 (42.7) 2.08 (52.8) 2.37 (60.2) 1.68 (42.7) 2.08 (52.8) 2.37 (60.2) 1.82 (46.2) 1.91 (48.5) 2.13 (54.1) 1.82 (46.2) 1.91 (48.5) 2.13 (54.1) 1.82 (46.2) 1.88 (47.8) 1.88 (47.8) 0.62 (15.7) 0.78 (19.8) 0.62 (15.7) 0.78 (19.8) 0.62 (15.7) 1.88 (47.8) 0.62 (15.7) 3.50 (88.9) (26.2) H Straight /2 in. SS-12NBSW8T (33.3) (42.9) (46.2) 2.2 3/4 in. SS-12NBSW12T 1/2 in. 2.4 SS-12NBSW8P 3/4 in. 2.2 SS-12NBVCO12 1/2 in. 1.9 SS-12NBVCR (79.2) 1.31 (33.3) 1.88 (47.8) 1.82 (46.2) 0.62 (15.7) 4.78 (121) 4.88 (124) 5.10 (129) 4.78 (121) 4.88 (124) 5.10 (129) 4.78 (121) 4.85 (123) 4.78 (121) H Angle 4.97 (126) 4.97 (126) 4.85 (123) 4.97 (126) J 0.44 (11.2)

6 6 Severe-Service Union-Bonnet Needle Valves Ordering Information HN Series (High Pressure) Select an ordering number. Ordering numbers specify a regulating stem tip. Cobalt-based ball stem tips are available for 6HN series valves. To order, replace NR in the ordering number with NB. Example: 6HNBF4 Options and Accessories See page 9 for information about optional stem designs, stem packings, and sour gas valves. Dimensions Dimensions, in inches (millimeters), are for reference only and are subject to change. HN Series F panel hole drill E Panel thickness 1/4 (6.4) max C H open Socket weld end connection D B A B J End Connections Dimensions, in. (mm) Inlet/Outlet Size Ordering Number A B C D E F H J 3HN Series: in. (4.0 mm) Orifice; 0.35 C v Female NPT 1/8 in. SS-3HNRF2 1/4 in. SS-3HNRF4 Male NPT 1/4 in. SS-3HNRM4 Male/ female NPT Swagelok tube fittings Tube socket welds 1/4 in. SS-3HNRM4-F4 1/4 in. SS-3HNRS4 1/4 in. SS-3HNRSW4T 2.25 (57.2) 2.82 (71.6) 2.25 (57.2) 1.13 (28.7) 1.41 (35.8) 1.13 (28.7) 1.34 (34.0) 0.50 (12.7) 2.50 (63.5) 0.81 (20.6) 3.43 (87.1) 0.28 (7.1) Female NPT 1/4 in. SS-6HNRF4 1/2 in. SS-6HNRF8 Male NPT 1/2 in. SS-6HNRM8 Male/ female NPT 1/2 in. SS-6HNRM8-F8 6HN Series: in. (6.4 mm) Orifice; 0.86 C v (79.5) (46.0) (16.0) 3.25 (82.6) 3.13 (79.5) 3.25 (82.6) 1.63 (41.4) 1.63 (41.4) 1.90 (48.2) 1.81 (46.0) 1.90 (48.2) 0.78 (19.8) 0.63 (16.0) 0.78 (19.8) 3.50 (88.9) 1.06 (26.9) 4.27 (108) 4.36 (111) 4.27 (108) 4.36 (111) Dimensions shown with Swagelok tube fitting nuts finger-tight.

7 Pneumatic Actuators Swagelok 3N and 6N series valves can be equipped with pneumatic actuators in normally closed, normally open, and double-acting models. Actuator Technical Data Pressure-Temperature Ratings Normally closed: 150 psig at 20 to 300 F (10.3 bar at 28 to 148 C) Normally open and double acting: 150 psig at 20 to 400 F (10.3 bar at 28 to 204 C) Dimensions F 1/8-27 NPT A 3/8 in. (9.5 mm) C D 4 mounting holes for 1/4 in. (6.4 mm) dia bolts at 90 Severe-Service Union-Bonnet Needle Valves 7 Pneumatic Actuator Performance Minimum actuator pressures and maximum system pressures shown in the graphs below are based on factory adjustment of packing and stems lubricated with a silicone-based lubricant. Packing nut adjustment may affect actuator performance. If the load is too low, the packing may leak. If the load is too high, the actuator may stall and the valve will not cycle. Stem drive nut Normally Closed Normally Closed Actuators Adjustment of the actuator stem drive nut affects actuator spring force, which in turn affects: the maximum system pressure that can be shut off by the valve the minimum actuator pressure required to open the valve. Figures 1 and 2 show the minimum actuator pressure required to open a normally closed actuator at system pressure. Maximum system pressure for a 3N valve with normally closed actuator: NR, NTR, or NKR stem 3000 psig (206 bar). NB stem4400 psig (303 bar). Maximum system pressure for a 6N valve with normally closed actuator: NR, NTR, or NKR stem 3600 psig (248 bar). NB stem4600 psig (316 bar). 1/8-27 NPT B E A C D Normally Closed 1/8-27 NPT B E A 3/8 in. (9.5 mm) C D Fig. 13N Series with Normally Closed Actuator System Pressure, bar Minimum Actuator Pressure, psig Full Open NR, NTR, NKR NB System Pressure, psig Minimum Actuator Pressure, bar Valve Series 3N 6N Normally Open Dimensions, in. (mm) Dimensions are for reference only and are subject to change. Double Acting A B C D E F 4.22 (107) 4.47 (114) 5.91 (150) 6.22 (158) 3.75 (95.3) 4.25 (108) 3.25 (82.6) 3.81 (96.8) 1.12 (28.4) 1.19 (30.2) 8.47 (215) 9.41 (239) Fig. 2 6N Series with Normally Closed Actuator System Pressure, bar Minimum Actuator Pressure, psig Full Open NR, NTR, NKR NB System Pressure, psig Minimum Actuator Pressure, bar

8 8 Severe-Service Union-Bonnet Needle Valves Pneumatic Actuators Ordering Information To order a 3N or 6N series valve equipped with a pneumatic actuator, add a designator to the valve ordering number. Example: SS-3NBS4-95C Valve Series Normally Closed Actuator Designator Normally Open Double Acting 3N -95C -95O -95D 6N -96C -96O -96D Normally Open Actuators The amount the stem orifice opens beyond the cracked-open position depends on system pressure, flow characteristics, and valve packing nut adjustment. Figures 3 and 4 show the minimum actuator pressure required to close a normally open actuator at system pressure. Minimum system pressure required to assist the spring in opening the valve: 3N series with normally open actuator1000 psig (69.0 bar). 6N series with normally open actuator500 psig (34.5 bar). Double-Acting Actuators Figures 5 and 6 show the minimum actuator pressure required to open or close a 3N or 6N series valve with a double-acting actuator at system pressure. Normally Open Double Acting Fig. 33N Series with Normally Open Actuator Fig. 53N Series with Double-Acting Actuator System Pressure, bar System Pressure, bar Minimum Actuator Pressure, psig System Pressure, psig Minimum Actuator Pressure, bar Minimum Actuator Pressure, psig PEEK Stem Packing PTFE or UHMWPE Stem Packing System Pressure, psig Minimum Actuator Pressure, bar Fig. 46N Series with Normally Open Actuator Fig. 66N Series with Double-Acting Actuator System Pressure, bar System Pressure, bar Minimum Actuator Pressure, psig System Pressure, psig Minimum Actuator Pressure, bar Minimum Actuator Pressure, psig PEEK Stem Packing System Pressure, psig PTFE or UHMWPE Stem Packing Minimum Actuator Pressure, bar

9 Severe-Service Union-Bonnet Needle Valves 9 Options and Accessories N Series and HN Series Stem Packing Materials PTFE packing is standard. Stem Packing To order an optional stem Material Designator packing material, add a stem UHMWPE -P packing material designator to the valve ordering number. See page 2 for pressuretemperature ratings of valves with optional stem packing materials. PEEK Grafoil -PK -G UHMWPE (ultrahigh-molecular weight polyethylene) is intended for service where fluorocarbons are not acceptable. UHMWPE packing is lubricated with nickel antiseize with hydrocarbon carrier; it does not require packing supports. PEEK (polyetheretherketone) packing material is a 2-piece chevron design including PEEK packing supports and molybdenum disulfide, fluorinated tungsten disulfide-based lubricant; stem packing replacement kits also contain nickel antiseize with hydrocarbon carrier. PEEK packing is not available in normally open or normally closed pneumatically actuated N series valves. Grafoil is a high-temperature packing material that does not require packing supports. Factory assemblies contain fluorinated tungsten disulfide-based lubricant and nickel antiseize with hydrocarbon carrier; stem packing replacement kits contain only nickel antiseize with hydrocarbon carrier. Grafoil is not available in pneumatically actuated N series valves or 12N series valves with colored phenolic knobs. Examples: SS-3HNRF4-P SS-6NBS8-PK SS-12NBF8-G Stem Designs N series valve ordering numbers specify NB ball stem tips. HN series valve ordering numbers specify NR regulating stem tips. To order valves with other stem designs, replace NB or NR in the ordering number with the desired stem design designator. Examples: SS-3NRF2 SS-3HNKRF2 Sour Gas Valves Valves with female pipe ends are available for sour gas service. Materials are selected in accordance with NACE MR0175/ISO The body and bonnet are annealed 316 stainless steel; the stem is 400. To order, add -SG to the valve ordering number. Examples: SS-3NBF2-SG SS-3HNRF2-SG Special Cleaning and Packaging (SC-11) To order N series and HN series valves with optional cleaning and packaging to ensure compliance with product cleanliness requirements stated in ASTM G93 Level C, add -SC11 to the valve ordering number. Example: SS-3NBF2-SC11 Stem Design Regulating➀ PCTFE soft-seat regulating PTFE soft-seat regulating➁ Designator NR NKR NTR ➀ Not intended for repetitive shutoff in gas applications. ➁ Not available in 12N series. Stem Packing Kits PTFE, UHMWPE, PEEK, and Grafoil stem packing kits are available. Kits contain stem packing(s), lubricant(s), and instructions. Valve Series Seal Material and Kit Ordering Number PTFE UHMWPE Grafoil PEEK 3N, 3HN T-9K-3N PE-9K-3N G-9K-3N PK-9K-3N 6N, 6HN T-9K-6N PE-9K-6N G-9K-6N PK-9K-6N 12N T-9K-12N PE-9K-12N G-9K-12N PK-9K-12N Lubricant Nickel antiseize with hydrocarbon carrier Nickel antiseize with hydrocarbon carrier and fluorinated tungsten disulfidebased; molybdenum disulfidebased coating

10 Options and Accessories N Series Handles Anodized black aluminum bar handles are standard. Colored phenolic (with brass insert) and 316 stainless steel bar handles are available. Exception: 12N series valves with Grafoil packing are not available with colored phenolic knobs. To order, add a handle designator to the valve ordering number. Examples: SS-3NBS4-BKP SS-12NBF8-SH Handle Black phenolic knob Blue phenolic knob Green phenolic knob Orange phenolic knob Red phenolic knob Yellow phenolic knob Stainless steel bar Designator -BKP -BLP -GRP -OGP -RDP -YWP -SH Oxygen Service Hazards For more information about hazards and risks of oxygenenriched systems, see the Swagelok Oxygen System Safety technical report, MS HN Series Ball Stem Tip Materials Cobalt-based is standard. To specify other ball tip materials, add a ball stem tip material designator to the valve ordering number: Example: SS-6HNBF4-M Ball Tip Material/ ASTM Specification Designator 440C SS/A C Alloy 400/B127 or B164 -M Alloy 20/B463 or B473 -C20 Alloy C-276/B574 or B575 -HC Additional Valve Materials Alloy 625, 825, 2507 super duplex stainless steel, and 6-moly materials are available for N and HN series valves. See the Severe-Service Union-Bonnet Needle Valves Special Alloy Materials catalog, MS A packing adjustment may be required periodically to increase service life and to prevent leakage. Valves that have not been cycled for a period of time may have a higher initial actuation torque. To increase service life, ensure proper valve performance, and prevent leakage, apply only as much torque as is required to achieve positive shutoff.

11 Severe-Service Union-Bonnet Needle Valves 11

12 Safe Product Selection When selecting a product, the total system design must be considered to ensure safe, trouble-free performance. Function, material compatibility, adequate ratings, proper installation, operation, and maintenance are the responsibilities of the system designer and user. Caution: Do not mix or interchange parts with those of other manufacturers. Warranty Information Swagelok products are backed by The Swagelok Limited Lifetime Warranty. For a copy, visit swagelok.com or contact your authorized Swagelok representative. Swagelok, VCR, VCOTM Swagelok Company GrafoilTM GrafTech International Holdings, Inc Swagelok Company Printed in U.S.A., AGS January 2016, RK MS