Swagelok Insertion Probe Information

Insertion Probe Information The following information is intended to provide guidance to define process interface valves with injection or sampling insertion probes (also referred to as quills). Insertion probe general information Insertion probes are typically used for one of two functions: Injection – where fluid flows through the probe directly into the process line. Sampling – where fluid is extracted from the process line through the probe. Support collar (optional) Probe end Preparation (45° shown) Flange face Process Ordering information Minimum information is required to define a probe: Probe length (i.e. distance from flange face) Probe pipe size (i.e. nominal bore) Probe pipe schedule End preparation (i.e. 90° square, 45° angle, basic or advanced spray nozzle) Additional information for optional support collars: Collar diameter Collar location (i.e. distance from flange face) Basic spray Advanced spray Standard probe sizes and options The main segment of the probe is manufactured from standard nominal bore pipe. The table below provides the range of nominal bore pipe sizes typically available. Probe Details dimensions, mm Pipe size (in) do di NB SCH 15.8 ½ in 40 21.4* (0.62) (0.84) 11.8 ½ in 160 (0.46) 20.9 ¾ in 40 26.7** (0.82) (1.05) 15.5 ¾ in 160 (0.61) 26.6 1 in 40 33.4 (1.04) (1.31) 20.7 1 in 160 (0.81) Valve Product Type VB04 Series VB03 Series 10mm 14mm 25mm 38mm Standard Standard Option Option Option Option Option Option Option Option Option Standard Standard Option Option Option NB = nominal bore, SCH = schedule, do = Pipe outside diameter & di = Pipe inside diameter (bore) Note: Probe diameter at the flange intersection = *25.0mm (0.98 in) and **30.0mm (1.18 in). Consideration must be taken to ensure that the probe diameter is not larger than the inside diameter of the process connection that the probe passes through. This document and information on it are the confidential property of Swagelok Company and are loaned to you for a limited purpose. Neither may be copied, exhibited, or furnished to others in any form without the written consent of Swagelok Company. Insertion Probe Information Determining the required probe length The probe length (L) required is dependent upon the following: Branch connection length (B) D Gasket width (G) B G Probe insertion distance (P) Process pipeline outside diameter (D) Probe length calculation (typical): L = B+G+ P Typical insertion distances: P P = D ÷ 2 or P = D ÷ 3 L Probe support collar options In certain instances, when the required probe length exceeds the calculated maximum unsupported length, support collars are required. These collars provide support for the probe at an intermediate point, which helps to reduce the unsupported length of the probe. These consist of a tri-lobed collar fit to the outside diameter of the probe. The outer diameter of the collar (lobes) is matched to the inside diameter of the process connection that the probe passes through. Support collar dimensions Pipe size Collar diameters, mm (in) 35 43 52 ½ in NB (1.3) (1.69) (2.04) 58 (2.28) ¾ in NB 48 1 in NB (1.89) Support collar diameter Un-supported Supported Total probe length NB = nominal bore Probe materials The probe material types and grades for the individual valve material types are: Valve Material Designator CA (carbon steel) DA (duplex stainless steel) SA (stainless steel) Æ Æ Æ Probe Material Grade / Specification Stainless steel TP316-316L / ASTM A312 Duplex stainless steel S31803 / ASTM A790 Stainless steel TP316-316L / ASTM A312 This document and information on it are the confidential property of Swagelok Company and are loaned to you for a limited purpose. Neither may be copied, exhibited, or furnished to others in any form without the written consent of Swagelok Company. Insertion Probe Information Probe sizing considerations Consideration should be taken to ensure that the insertion probe will not fail in service due to the effects of resonance. The velocity of the process fluid flowing over the probe can induce vibration in the probe which may cause the probe to fail. One method for determining that the probe natural frequency is sufficiently greater than that caused by the fluid flow rate is defined in the EEMUA (Engineering Equipment & Materials Users' Association), Publication 138:1988, Design and Installation of On-Line Analyser Systems, Appendix 2. Probe length calculations from EMMUA 138:1988 i i Extract from EEMUA Publication 138:1988, Design and Installation of On-Line Analyser Systems copyright of the Engineering Equipment & Materials Users' Association (EEMUA) and reproduced here with permission. All rights, title and interest in this extract remain with EEMUA. No further use of this extract is allowed without the express permission of EEMUA. EEMUA Publication 138:1988 is available for sale from the Engineering Equipment & Materials Users' Association, 10-12 Lovat Lane, London EC3R 8DN or www.eemua.org. L2 = ( Fm × 4.38 × d 0 × 10 Ε 2 2 × do + di ρ S ×V ) (1) Alternatively simplified for: Fm = 0.9 S = 0.4 L2 = 100 × d 0 V Ε ρ ( 2 × do + di 2 ) (2) Where Fm = Virtual mass factor, constant 0.9 for gas service 1.0 for liquid service do = Outside diameter of probe, mm di = Inside diameter of probe, mm S = Strouhal number, constant 0.4 worst case 0.2 best case V = Fluid velocity, m/sec Ε = Probe material modulus of elasticity, kg/cm2 ρ = Probe material density, kg/m3 L = Unsupported probe length, mm Example probe length calculation Probe size: 1/2in NB schedule 40 Probe material: 316SS Operating temperature: 38°C (100°F) Process fluid velocity: 10 m/sec 100 × 21.4 1950000 × 21.4 2 + 15.8 2 10 7950 2140 L2 = 245.3 × 707.6 10 L2 = L2 = 214 × 416.6 ( ) Where do = 21.4 mm di = 15.8 mm V =10.0 m/sec Ε = 1.95x106 kg/cm2 ρ = 7.95x103 kg/m3 L = 89153 = 298mm The maximum recommended unsupported probe length for this application is 298mm (11.7 in). If the required insertion distance is less than 298mm (11.7 in) then this probe is suitable for the application. If the required insertion distance is greater than 298mm (11.7 in) then: ƒ Recalculate the length using different valves for Fm and S (if appropriate). ƒ Change the probe sizes (nominal bore and/or schedule). ƒ Reduce the unsupported probe length by adding a support collar. This document and information on it are the confidential property of Swagelok Company and are loaned to you for a limited purpose. Neither may be copied, exhibited, or furnished to others in any form without the written consent of Swagelok Company. Insertion Probe Information Example of probe lengths calculated using the formula (2) from EMMUA 138:1988 The graph below shows typical maximum probe lengths for 316SS probes of various sizes calculated for a number of fluid velocities. Fluid Velocity v Probe Length - Stainless Steel 20.00 Fluid Velocity, m/s 15.00 1in SCH40 1in SCH160 3/4in SCH40 10.00 3/4in SCH160 1/2in SCH40 1/2in SCH160 5.00 2.00 0 100 200 300 400 500 600 700 Probe Length, mm Where: do = see table below di = see table below V = 2, 5, 10, 15 and 20 m/sec Ε = 1.95x106 kg/cm2 for 316SS ρ = 7.95x103 kg/m3 for 316SS Pipe size NB SCH ½ in 40 ½ in 160 ¾ in 40 ¾ in 160 1 in 40 1 in 160 dimensions, mm (in) do di 15.8 21.4 (0.62) (0.84) 11.8 (0.46) 20.9 26.7 (0.82) (1.05) 15.5 (0.61) 26.6 33.4 (1.04) (1.31) 20.7 (0.81) This document and information on it are the confidential property of Swagelok Company and are loaned to you for a limited purpose. Neither may be copied, exhibited, or furnished to others in any form without the written consent of Swagelok Company. Insertion Probe Information Insertion Probe Part Numbering Information Refer to Swagelok catalogue MS-02-340 for additional information. VB03 VB04 A A B C D E F G H J K L 01 SA D 1 D 1 3 C A S 450 Configuration VB03 Ball/needle/ball (block/bleed/block) 01 = Full-bore 02 = Reduced-bore VB04 Ball/needle/ball (block/bleed/block) 01 = 3/8 in. (9.5 mm) bore 02 = 1/2 in. (14 mm) bore Ball/needle/ball/check (block/bleed/block/check) - injection only 07 = 3/8 in. (9.5 mm) bore 08 = 1/2 in. (14 mm) bore B Materials SA = 316 stainless steel CA = Carbon steel DA = Duplex stainless steel C Seats, Body Seals, Stem Seals D = PEEK, graphite, PTFE D ASME Class VB03 1 = 150 2 = 300 3 = 600 5 = 900/1500 6 = 2500 (configuration 01, flange size D only; configuration 02, flange size D or E) VB04 1 = 150 3 = 300/600 5 = 900/1500 6 = 2500 E Process Connection Flange Size D = 1 1/2 in. (DN 40) E = 2 in. (DN 50) F Process Connection Flange Type 1 = RF smooth (3.2 to 6.3 µm) 2 = RF serrated (6.3 to 12.5 µm) 3 = RTJ G Outlet Connection VB03 3 = Flange (same as process) VB04 3 = Flange (same as process) C = 1/2in. female NPT H Bleed Connection C = 1/2in. female NPT J Handle Options A = Block, nonlockable levers; bleed, antitamper B = Block, lockable levers; bleed, antitamper C = Block, nonlockable levers; bleed, bar D = Block, lockable levers; bleed, bar Additional insertion probe details K End preparation S= 45° R = 90° L Length➀ 450 = 450mm (example) ➀ Specify required dimension in millimetres (mm) up to 3 characters maximum Options Additional special options (support collars, spray nozzles, etc.) can be configured to suit. For information contact your authorised Swagelok sales and service representative for assistance. This document and information on it are the confidential property of Swagelok Company and are loaned to you for a limited purpose. Neither may be copied, exhibited, or furnished to others in any form without the written consent of Swagelok Company.