Mineral insulated heating cable – Thermon MIQ Mineral Insulated Heating Cable v.1 User Manual

Page 6

MIQ

Mineral Insulated Heating Cable

Installation on Valves and Pumps . . .

1. Install heating cable in accordance with Illustrations

F and G below. Secure heating cable to piping using
stainless steel tie wire or banding.

2. Additional cable is required to provide extra heat at

valves, pumps and miscellaneous equipment to offset
the increased heat loss associated with these items.
Refer to Table 2 for estimated cable requirements for
installation on typical valves and pumps.

3. Install heating cable on valves and pumps utilizing a

looping technique (this allows the valve or pump to be
removed if required). Do not cross cable.

4. Minimum bend radius is 6X cable O.D. Do not exceed

bend radius when completing installation.

5. In potentially explosive areas, it is recommended to

secure MIQ cable with stainless steel banding at all
fl anges, valves or any other irregular shaped equipment.

Table 2: Valve and Pump Allowances

Illustration G: Typical Pump Detail . . .

Heating Cable Serpentined on Valve

Heating Cable Serpentined on Pump

MIQ Heating

Cable

MIQ

Heating Cable

Stainless Steel Tie

Wire or Banding

Notes. . .

1. The valve allowance given is the total amount of additional cable to be installed on

the valve. If multiple tracers are used, total valve allowance may be divided among
the individual tracers. The total valve allowance may be alternated among tracers for
multiple valves in a heat trace circuit.

2. Allowances are for 150 pound valves. More cable is required for higher rated

valves.

3. Refer to heat trace isometric drawing for project specifi c allowances.

Illustration F: Typical Valve Detail . . .

Stainless Steel Tie

Wire or Banding

Pipe Size

Valve Type

Pump Type

Screwed

or Welded

Flanged

Butterfl y

Screwed

Flanged

.15

.30

.61

.23

.46

.91

.30

.61

.30

.61

1.22

.46

.61

.30

.91

1.37

.46

.76

.46

.91

1.52

.61

.76

.61

1.22

1.68

.76

1.07

.76

1.52

2.13

100

1.22

1.52

.91

2.44

3.05

150

2.13

2.44

1.07

4.27

4.88

200

2.90

3.35

1.22

5.79

6.71

250

3.81

4.27

1.22

7.62

8.53

300

4.57

5.03

1.52

9.14

10.06

350

5.49

5.94

1.68

10.97

11.89

400

6.55

7.01

1.83

13.11

14.02

450

7.77

8.23

1.98

15.54

16.46

500

8.69

9.14

2.13

17.37

18.29

600

10.36

10.97

2.44

20.73

21.95

750

12.19

12.80

3.05

24.38

25.60

NOTE:

Individual MIQ cable set
recommended for pumps.