Marsh Thermowells Catalog Page

Thermowells

THERMOWELLS

• In-Stock Thermowells for fast delivery

• Brass, 304 Stainless Steel or 316 Stainless Steel

• Tapered or Straight Shank

• 0.260/0.385 Standard Bore Sizes

• Threaded for easy connection

ALL DIMENSIONS ARE NOMINAL

THERMOWELLS PART #

M3957K67 21⁄2 11⁄8 Brass
M3957K68 2
M3957K69 2

M3957K64 4 21⁄2 Brass
M3957K65 4 2
M3957K66 4 21⁄2 316SS
M3957K37 6 41⁄2 Brass
M3957K38 6 41⁄2 304SS
M3957K51 6 41⁄2 316SS
M3957K39 9 7
M3957K41 9 7
M3957K52 9 71⁄2 316SS
M3957K42 12 101⁄2 Brass
M3957K43 12 101⁄2 304SS
M3957K53 12 101⁄2 316SS
M3957K71 18 161⁄2 Brass
M3957K72 18 161⁄2 304SS
M3957K73 18 161⁄2 316SS
M3957K75 24 221⁄2 304SS
M3957K76 24 221⁄2 316SS
M3957K77 21⁄2 15⁄8 Brass
M3957K78 2
M3957K79 21⁄2 15⁄8 316SS

1/2"NPT

3/4"

1/2" NPT

1-3/4"

3/8"

1/2" NPT

1-1/8"

5/8" DIA.

S

U

U

.260" BORE

.260" BORE

1/2" DIA.

2-1/2"

1/2" DIA.

1/4"

“S”

STEM

1

⁄2 11⁄8 304SS

1

⁄2 11⁄8 316SS

1

⁄2 15⁄8 304SS

“U”

INSERTION

1

⁄2 304SS

1

⁄2 Brass

1

⁄2 304SS

WELL

MATERIAL

68

1/2" NPT

3/4"

1-3/4"

3/4" NPT

3/4" NPT

S

3/4" DIA.

S

U

.260" BORE

1/4"

2-1/2"

1/2" DIA.

1/4"

M3957K11 4 21⁄2 Brass
M3957K21 4 21⁄2 304SS
M3957K54 4 21⁄2 316SS
M3957K12 6 41⁄2 Brass
M3957K22 6 41⁄2 304SS
M3957K55 6 41⁄2 316SS
M3957K13 9 71⁄2 Brass
M3957K23 9 71⁄2 304SS
M3957K56 9 71⁄2 316SS
M3957K44 12 101⁄2 Brass
M3957K45 12 101⁄2 304SS

1

M3957K57 12 10
M3957K84 18 16

⁄2 316SS

1

⁄2 Brass

M3957K85 18 161⁄2 304SS
M3957K86 18 161⁄2 316SS
M3957K87 24 221⁄2 Brass
M3957K88 24 221⁄2 304SS
M3957K89 24 221⁄2 316SS

Thermowells

THERMOWELLS PART #

M3957K46 4 21⁄2 Brass
M3957K47 4 2
M3957K58 4 2
M3957K48 6 4
M3957K49 6 4
M3957K59 6 4
M3957K91 9 7
M3957K92 9 7
M3957K93 9 7
M3957K94 12 10
M3957K95 12 10

1/2" NPT

3/4"

1-3/4"

1" NPT

7/8" DIA.

S

U

.260" BORE

2-1/2"

1/2" DIA.

1/4"

M3957K96 12 10
M3957K14 18 16
M3957K15 18 16
M3957K16 18 16

ALL DIMENSIONS ARE NOMINAL

M3957K18 24 22
M3957K19 24 22

THERMOWELLS PART #

M3957K24 9 41⁄2 4 Brass
M3957K25 9 4

1/2" NPT

1/2" NPT

1/2" NPT

T 3/4" U

2-1/2"

5/8" DIA.

1/2" NPT

S

T1"U

3/4" DIA.

3/4" NPT

S

T1"U

7/8" DIA.

1" NPT

S

.260" BORE

2-1/2"

.260" BORE

2-1/2"

.260" BORE

1/2" DIA.

1/4"

1/2" DIA.

1/4"

1/2" DIA.

1/4"

M3957K26 9 4
M3957K27 12 7
M3957K28 12 7
M3957K29 12 7

M3957K4 18 13
M3957K5 18 13
M3957K6 18 13
M3957K8 24 19

M3957K9 24 19
M3957K31 6 21⁄2 23⁄4 Brass
M3957K32 6 2
M3957K61 6 2
M3957K33 9 4
M3957K34 9 4
M3957K62 9 4
M3957K35 12 7
M3957K36 12 7
M3957K63 12 7

M3957K115 18 13
M3957K116 18 13
M3957K117 24 19
M3957K118 24 19
M3957K119 24 19
M3957K121 9 41⁄2 33⁄4 Brass
M3957K122 9 4
M3957K123 9 4
M3957K124 12 7
M3957K125 12 7
M3957K126 12 7
M3957K131 18 13
M3957K132 18 13
M3957K133 18 13
M3957K134 24 19
M3957K135 24 19
M3957K136 24 19

“S”

STEM

“S”

STEM

“U”

INSERTION

1

⁄2 304SS

1

⁄2 316SS

1

⁄2 Brass

1

⁄2 304SS

1

⁄2 316SS

1

⁄2 Brass

1

⁄2 304SS

1

⁄2 316SS

1

⁄2 Brass

1

⁄2 304SS

1

⁄2 316SS

1

⁄2 Brass

1

⁄2 304SS

1

⁄2 316SS

1

⁄2 304SS

1

⁄2 316SS

“U”

INSERTION

1

⁄2 4 304SS

1

⁄2 4 316SS

1

⁄2 4 Brass

1

⁄2 4 304SS

1

⁄2 4 316SS

1

⁄2 4 Brass

1

⁄2 4 304SS

1

⁄2 4 316SS

1

⁄2 4 304SS

1

⁄2 4 316SS

1

⁄2 23⁄4 304SS

1

⁄2 23⁄4 316SS

1

⁄2 33⁄4 Brass

1

⁄2 33⁄4 304SS

1

⁄2 33⁄4 316SS

1

⁄2 33⁄4 Brass

1

⁄2 33⁄4 304SS

1

⁄2 33⁄4 316SS

1

⁄2 33⁄4 304SS

1

⁄2 33⁄4 316SS

1

⁄2 33⁄4 Brass

1

⁄2 33⁄4 304SS

1

⁄2 33⁄4 316SS

1

⁄2 33⁄4 304SS

1

⁄2 33⁄4 316SS

1

⁄2 33⁄4 Brass

1

⁄2 33⁄4 304SS

1

⁄2 33⁄4 316SS

1

⁄2 33⁄4 Brass

1

⁄2 33⁄4 304SS

1

⁄2 33⁄4 316SS

1

⁄2 33⁄4 Brass

1

⁄2 33⁄4 304SS

1

⁄2 33⁄4 316SS

“T”

LAG

WELL

MATERIAL

WELL

MATERIAL

69