TW30

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WIKA · Temperature measurement · Family TW30

Thermowell for lap flanges

Name: Thermowell for lap flanges
Brand: WIKA
SKU: TW30

Thermowell for lap flanges, heavy-duty design, suitable for high process loads in petrochemical industry and plant construction.

2.2 test report3.1 inspection certificate

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Description

Each thermowell/protection tube is an important component of any temperature measuring location. It is used to separate the process from the surrounding area, thus protecting the environment and operating personnel and keeps aggressive media, high pressures and flow rates from the temperature probe itself and thereby enables the thermometer to be exchanged during operation.

Based on the almost limitless application possibilities, there are a large number of variants, such as thermowell designs or materials. The type of process connection and the basic method of manufacture are important design differentiation criteria. A basic differentiation can be made between threaded and weld-in thermowells/protection tubes, and those with flange connections.

Special features

Heavy-duty design
Solid-machined version without weld seam
Possible thermowell forms: Design TW30-A: tapered Design TW30-B: straight Design TW30-C: stepped
Design TW30-A: tapered
Design TW30-B: straight
Design TW30-C: stepped
For lap flanges per ASME B16.5

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Without3.1 Material certificate acc. EN 10204 with mill certificate (GB+G)

Your configuration

Thermowell styleTapered
Unit of measureMetric (mm)
Flange sizeASME 1 inch
Pressure ratingClass 300
Pipe sched. /Intern. nozzle dia.WIKA (Standard Germany)
Connection to thermometer [N]1/2 NPT female
Insertion length [U]150
Head length [H]57
Bar diameter [Bd or F2]1.315 inch (33.4 mm)
MaterialStainless steel 316/316L
Bore size [B or d1]0.260 inch (6.6 mm)
Root diameter [Q]19,0
Tip diameter [V or F3]16,0
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Your configuration

Thermowell styleTapered
Unit of measureMetric (mm)
Flange sizeASME 1 inch
Pressure ratingClass 300
Pipe sched. /Intern. nozzle dia.WIKA (Standard Germany)
Connection to thermometer [N]1/2 NPT female
Insertion length [U]150
Head length [H]57
Bar diameter [Bd or F2]1.315 inch (33.4 mm)
MaterialStainless steel 316/316L
Bore size [B or d1]0.260 inch (6.6 mm)
Root diameter [Q]19,0
Tip diameter [V or F3]16,0
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Identification

Model	TW30
Subcategory	Thermowell

Process conditions

Process connection

Clamped between mating flangesClamped between mating flanges per ASME B16.5½ NPT female threadG ½ female thread1/2 NPT female threadG1/2 female thread

Materials

Thermowell material

Stainless steel 316/316L, Stainless steel 304/304L, A105, Stainless steel 1.4571, Alloy C4, Alloy C276, Alloy 400, Titanium grade 2

Certifications and approvals

Certifications

2.2 test report3.1 inspection certificate

Additional details

Thermowell	Yes
Thermowell form	Form 3F
Datasheet languages	EN

Tables from datasheet

Basic information

Thermowell form
DesignTW30-A	Tapered
DesignTW30-B	Straight
DesignTW30-C	Stepped
Material (wetted)	■ Stainless steel 316/316L ■ Stainless steel 304/304L ■ A105 ■ Stainless steel 1.4571 ■ Alloy C4 ■ Alloy C276 ■ Alloy 400 ■ Titanium grade 2 ■ Materials in accordance with ASTM specifications → Other materials on request

Process connection

Type of process connection	Clamped between mating flanges
Connection to thermometer	■ ½NPTfemale thread ■ G½female thread
	→ Other threads on request
Bore size	■ Ø6.6 mm[0.260 in] ■ Ø8.5 mm[0.355 in]
Insertion length U	■ 150 mm[5.9 in] ■ 200 mm[7.87 in] ■ 250 mm[9.84 in] ■ 300 mm[11.81 in] ■ 350 mm[13.78 in] ■ 400 mm[15.75 in] ■ 6 in [152 mm] ■ 7 in [178 mm] ■ 10 in [254 mm] ■ 13 in [330 mm] ■ 16 in [406 mm]
	→ Other insertion lengths on request
Min. insertion length	Depending on the selected version
Max. insertion length 1)	800 mm[31.5 in]
Connection length H	■ 57 mm[2.25 in] ■ 83 mm[3.25 in]
	→ Other connection lengths on request
Min. Connection length	Depending on the selected version
Max. Connection length	250 mm[10 in]
Tip thickness	6.4 mm[0.25 in]
	→ Other tip thicknesses on request
Suitable stem lengths l 1 (dial thermometer) with tip thickness 6.4 mm[0.25 in]
Connection design S, 4, 4.1, 5, 6.1, 6.2, 6.3 and 7	Parallel thread Tapered thread	l 1 = U + H - 10 mm[0.4 in] l 1 = U + H - 2 mm[0.08 in]
Connection design 2	l 1 = U + H - 30 mm[1.2 in]
Sealing face diameter per ASME B16.5 (raised face RF)
With DN 1"	51 mm[2.079 in]
With DN 1 ½"	73 mm[2.874 in]
With DN 2"	92 mm[3.622 in]

Process connection

Sealing face roughness	Design	AARH in µinch	Ra in µm
ASME B16.5	Stock finish	125 ... 250	3.2 ... 6.3
	Smooth finish	< 125	< 3.2

Operating conditions

Max. process temperature, process pressure

Depending on: ■ Thermowell design - Dimensions - Material - Flange pressure rating of the lap flange ■ Process conditions - Flow rate - Medium density

Hydrostatic pressure test

This non-destructive testing is performed in accordance with ASME B31.3 using the pressure values of the flange standard ASME B16.5 depending on pressure rating, temperature range and material within the associated pressure-temperature table. TheTW30 thermowell material used is used as the flange material.

Wake frequency calculation (option)

The calculation in accordance with ASME PTC 19.3 TW-2016 of individual thermowells minimises the risk of dynamic damage that can be caused by the vortex shedding of a Kármán vortex street (Vortex Induced Vibration; VIV). In addition, the static loads due to lateral flow and the process pressure are calculated depending on the temperature. The calculation can be carried out independently using an online tool or as aWIKA engineered service (subject to charges). → For further information, see Technical information IN 00.15 'Wake frequency calculation'.

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Certificates

Certificates	■ 2.2 test report ■ 3.1 inspection certificate

Lap flange	Dimensions in mm[in]	Weight in kg [lbs]
DN	PN in lbs	H	Ø Q	ØV	Ø B	Ø Bd	Ø g	U = 4 in	U = 13 in	U = 22 in
1"	150	2 ¼in [approx. 57 mm]	19 [0.750]	16 [0.625]	■ 6.6 [0.260] ■ 8.5 [0.355]	33.4 [1.315]	51 [2.008]	1.1 [2.425]	1.6 [3.527]	2.1 [4.629]
300	2 ¼in [approx. 57 mm]	19 [0.750]	16 [0.625]	■ 6.6 [0.260] ■ 8.5 [0.355]	33.4 [1.315]	51 [2.008]	1.1 [2.425]	1.6 [3.527]	2.1 [4.629]
600	2 ¼in [approx. 57 mm]	19 [0.750]	16 [0.625]	■ 6.6 [0.260] ■ 8.5 [0.355]	33.4 [1.315]	51 [2.008]	1.1 [2.425]	1.6 [3.527]	2.1 [4.629]
1,500	3 ¼in [approx. 83 mm]	19 [0.750]	16 [0.625]	■ 6.6 [0.260] ■ 8.5 [0.355]	33.4 [1.315]	51 [2.008]	1.1 [2.425]	1.6 [3.527]	2.1 [4.629]
2,500	3 ¼in [approx. 83 mm]	19 [0.750]	16 [0.625]	■ 6.6 [0.260] ■ 8.5 [0.355]	33.4 [1.315]	51 [2.008]	1.1 [2.425]	1.6 [3.527]	2.1 [4.629]
1 ½"	150	2 ¼in [approx. 57 mm]	27 [1.063]	19 [0.750]	■ 6.6 [0.260] ■ 8.5 [0.355]	48.3 [1.902]	73 [2.874]	1.8 [3.968]	2.5 [5.512]	3.3 [7.275]
300	2 ¼in [approx. 57 mm]	27 [1.063]	19 [0.750]	■ 6.6 [0.260] ■ 8.5 [0.355]	48.3 [1.902]	73 [2.874]	1.8 [3.968]	2.5 [5.512]	3.3 [7.275]
600	2 ¼in [approx. 57 mm]	27 [1.063]	19 [0.750]	■ 6.6 [0.260] ■ 8.5 [0.355]	48.3 [1.902]	73 [2.874]	1.8 [3.968]	2.5 [5.512]	3.3 [7.275]
1,500	3 ¼in [approx. 83 mm]	27 [1.063]	19 [0.750]	■ 6.6 [0.260] ■ 8.5 [0.355]	48.3 [1.902]	73 [2.874]	1.8 [3.968]	2.5 [5.512]	3.3 [7.275]
2,500	3 ¼in [approx. 83 mm]	27 [1.063]	19 [0.750]	■ 6.6 [0.260] ■ 8.5 [0.355]	48.3 [1.902]	73 [2.874]	1.8 [3.968]	2.5 [5.512]	3.3 [7.275]

150	2 ¼in [approx. 57 mm]	27 [1.063]	19 [0.750]	■ 6.6 [0.260] ■ 8.5 [0.355]	60.3 [2.374]	92 [3.622]	2.7 [5.952]	3.4 [7.496]	4.1 [9.039]
300	2 ¼in [approx. 57 mm]	27 [1.063]	19 [0.750]	■ 6.6 [0.260] ■ 8.5 [0.355]	60.3 [2.374]	92 [3.622]	2.7 [5.952]	3.4 [7.496]	4.1 [9.039]
600	3 ¼in [approx. 83 mm]	27 [1.063]	19 [0.750]	■ 6.6 [0.260] ■ 8.5 [0.355]	60.3 [2.374]	92 [3.622]	2.7 [5.952]	3.4 [7.496]	4.1 [9.039]
1,500	3 ¼in [approx. 83 mm]	27 [1.063]	19 [0.750]	■ 6.6 [0.260] ■ 8.5 [0.355]	60.3 [2.374]	92 [3.622]	2.7 [5.952]	3.4 [7.496]	4.1 [9.039]
1,500	3 ¼in [approx. 83 mm]	27 [1.063]	19 [0.750]	■ 6.6 [0.260] ■ 8.5 [0.355]	60.3 [2.374]	92 [3.622]	2.7 [5.952]	3.4 [7.496]	4.1 [9.039]

Overview of versions

TW10	Thermowell with flange
TW15/TW50	Threaded thermowell
TW20	Weld-in thermowell (for welding socket)
TW25	Weld-in thermowell (variable welding diameter)
TW30	Thermowell in Vanstone design for lap flanges

Dimensions in mm[in] Surface texture z y x Tol. ISO 2768 - mK 0,5 ...6 >6 >30 >120 ...30 ...120 ...400 Check indicator language nominal size	Root diam- eter mm [inch] units SIZE ISO 14405  8015 Nur zur DR comments	Tip diam- eter www.wika.com D-63911 Klingenberg ALEXANDER WIEGAND SE & Co. KG Information sheets 1 / 1	Strake height	Strake depth	Scruton length 1)	Insertion length 1)
- 63 16 4 1 ± 0,1 ± 0,2 ± 0,3 ± 0,5 GER/ENG	Ø Q ISO	ØV DEKLI1_EN_A4M_T01 26.04.2023	Sh	Sw	SL	U
1" pipe schedule 5 ... 80	24 [0.945]	17 [0.669]	2.5 [0.098]	2.5 [0.098]	Max. 800 [31.5]	Max. 1,000 [39]
1 ½" pipe schedule 5 ... 160	30 [1.181]	20 [0.787]	2.5 [0.098]	2.5 [0.098]	Max. 800 [31.5]	Max. 1,000 [39]
2" pipe schedule 5 ... 160	30 [1.181]	20 [0.787]	2.5 [0.098]	2.5 [0.098]	Max. 800 [31.5]	Max. 1,000 [39]

Thermowell for lap flanges

Description

Special features

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2 standard articles of family TW30