Richards Thermocouple and Temperature Sensor Catalog 16

Metal Tubes - Nominal Pipe Thread (NPT)

Richards metal thermocouple protection tubes are manufactured using our special processes to maximize the tube service life. This is evident by our uniquely shaped, heavy mass tips which have been proven in the field for years. Prior to shipment, each tube goes through our Hydro-Pneumatic testing to check for porosity. Protection tubes are typically made with a closed tip and one threaded on the cold end, but they are also available with open ends and various threading options. Open Tube Examples: The part number 601-YOBE-12 signifies a 1” O.D., Alloy 601, Open Both Ends, and no threads. The part number 601-OBE-12 signifies a 1” O.D., Alloy 601, Open Both Ends, and one end threaded. The part number 601-OBE2T-12 signifies a 1” O.D., Alloy 601, Open Both Ends, and both ends threaded. Closed Tube Examples: The part number 601-12 signifies a 1” O.D., Alloy 601, closed one end, and one end threaded. The part number 601-12-NT signifies a 1” O.D., Alloy 601, closed one end, and no threads.

Typical

Protection

Pipe

O.D.

I.D.

Lbs/

Kg./

Application

Tube Alloy

Size

Inches mm Inches mm Foot Meter

Type K

601 Maximum service tem- perature 2300°F (1260°C) in oxidizing atmospheres. good resistance to sulfidizing atmospheres. 446SS Maximum service temperature 2100°F (1150°C) in oxidizing atmospheres.

#6 Seamless Nickel Alloy Nickel 60.5%, Chromium 23% Iron 14%, Aluminum 1.4% Copper .5%, Manganese .5% Silicon .2%, Carbon .05% #7 Seamless Stainless Steel Chromium 23-27% Manganese 1.5% Silicon 1%, Nitrogen .25% Carbon .20%, Sulphur .030% Phosphorous .040% Iron (Balance) #8 Seamless Stainless Steel Chromium 19% Nickel 10%, Manganese 2% Silicon 1%, Carbon .08% Phosphorous .045%

1” Std 3/4” Std 1/2” Std 3/8” Std

1.32 1.05

33.5 26.7 21.3 17.2

1.05 .82 .62 .49

26.7 20.8 15.7 12.4

1.80 1.20

2.66 1.79 1.35 .91

601-* 634-* 622-* 638-*

.84 .68

.91 .61

1” Std 3/4” XH 3/4” NPT 1/2” Std 1/2”XH 3/8” Std 1/4” XH 1” Std 3/4” Std 3/4” XH 3/4” NPT 1/2” Std 1/2” XH 3/8” Std 1/4” Std 1/8” Std 1” Std 3/4” Std 3/4” XH 3/4” NPT 1/2” Std 1/2” XH 3/8” Std 1/4” Std 1/8” Std

1.32 1.05 1.25

33.5 26.7 31.8 21.3 21.3 17.3 13.7 33.5 26.7 26.7 31.8 21.3 21.3 17.3 13.7 10.4 33.5 26.7 26.7 31.8 21.3 21.3 17.2 13.7 10.3

1.05 .74 .56 .62 .55 .49 .25 1.05 .82 .74 .56 .62 .55 .49 .36 .27 1.05 .82 .74 .56 .62 .55 .49 .36 .27

26.7 18.8 14.2 15.7 14.0 12.4 6.4 26.7 20.8 18.8 14.2 15.7 14.0 12.4

1.68 1.47 3.20 .85 1.09

2.50 2.19 4.76 1.27 1.62

701-* 734XH-* 734SP-* 722-* 712XH 738-* 714XH-*

.84 .84 .68 .54

Excellent resistance to sulfidizing atmospheres , corrosion, scaling, and abrasion.

.57 .42

.85 .63

304SS Maximum service temperature 1600°F (871°C) in oxidizing atmospheres.

1.32 1.05 1.05 1.25

1.68 1.13 1.47 3.20 .85 1.09

2.50 1.68 2.19 4.76 1.27 1.62

801-* 834-*

834XH-* 834SP-* 822-* 812XH-*

.84 .84 .68 .54 .41

.57 .42 .24

.85 .63 .36

838-* 814-* 818-*

Sulphur .030% Iron (Balance)

9.1 6.9

600 Maximum service temperature 2100°F (1150°C) in oxidizing atmospheres. Avoid sulfidizing atmospheres.

1.32 1.05 1.05 1.25

26.7 20.8 18.8 14.2 15.7 14.0 12.4

1.80 1.22 1.51 3.20 .91 1.17

2.66 1.81 2.25 4.76 1.35 1.74

901-* 934-*

#9 Seamless Nickel Alloy Nickel 76% Chromium 15.5% Iron 8% Manganese .5%

934XH-* 934SP-* 922-* 912XH-*

.84 .84 .68 .54 .41

Silicon .2%, Copper .2% Carbon .08%

.61 .46 .26

.91 .68 .39

938-* 914-* 918-*

9.1 6.9

800 Maximum service temperature 2100°F (1150°C) in oxidizing or reducing atmospheres. Good resistance to sulfidizing

#10 Seamless Nickel Alloy Nickel 35%, Chromium 23% Iron 39.5%, Manganese 1.5% Silicon 1%, Copper .75% Aluminum & Titanium .6% Carbon .1%

1” Std 3/4” Std 1/2” XH

1.32 1.05 .84

33.5 26.7 21.3

1.05 .82 .55

26.7 20.8 14.0

1.72 1.15 1.12

2.56 1.71 1.66

1001-* 1034-* 1012XH-*

Replace the * in the above part numbers with the required length as the suffix. Protection tubes are stocked in multiples of 6 inches starting at 12 inches, although any length can be specified.

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