Marsh Tridicators Catalog Page

TRIDICATORS

3.69

3.69

1.48

• Back and Bottom Mounting Options

• Rotatable Set Pointer

• Rugged Construction

• Three-Color Dial

• Three Pressure Ranges

1

• 2

⁄2” & 31⁄2” Sizes

Marsh Instruments Tridicators (Boiler Gauges) are designed and suitable for hot water heating systems. These
instruments indicate pressure in psi and altitude for pools and spa’s in feet of H
a set hand for setting the desired pressure and altitude of the installation.

Typical applications include hot water boilers, heated pools, spa’s and hot tubs.

STANDARD RANGES & PART NUMBERS

TYPE TRIDICATORS

Size 21⁄2” 31⁄2” 31⁄2”

Case Style Round Square Square

Case Material Steel Steel Steel
Internals Copper Alloy Copper Alloy Copper Alloy
Mounting/Case Style CB LBM LM
Connection

1

⁄4 NPT

1

Scale Standard psi/Feet of Water psi/Feet of Water psi/Feet of Water
0 to 60 psi / 0 to 130 ft H

0 to 100 psi / 0 to 230 ft H

0 to 200 psi / 0 to 460 ft H

0 to 300 psi / 0 to 680 ft H

0 Y22026 Y22006 Y22002

2

0 Y22008 Y22004

2

0 Y22016 Y22012

2

0 Y22018 Y22014

2

Y22006

RED POINTERS

BLACK ALTITUDE POINTER

3.67 SQ

.97

DIAL, WHITE WITH BLACK CHARACTERS

1.438

1.5

1.94

.312 OD

BULB

1/2 NPT

7/8 SQUARE

Y22002

O; in °F and °C. All models feature

2

⁄2 NPT

1

⁄2 NPT

Temperature

SPECIFICATIONS

AccurAcy

ASME Grade B=±3/2/3% (±2% of

range across middle half of scale)

cAse siz

1

e2

⁄2” Round & 31⁄2” Square

cAse MAteriAL

Steel, black painted

connection

21⁄2” case: 1⁄4 NPT Center Back
Mount, 31⁄2” case: 1⁄2 NPT Lower
Mount or Lower Back Mount

Pressure rAnges

Dual scale in 4 ranges:
0 to 60 psi & 0 to 130 ft. of water
0 to 100 psi & 0 to 230 ft. of water
0 to 200 psi & 0 to 480 ft. of water
0 to 300 psi & 0 to 680 ft. of water

teMPerAture rAnge

60° to 260°F & 20° to 120°C

diALs Black markings on white
tube & socKet Copper Alloy
Pointers

Aluminum, red painted with black
painted set pointer

WindoW

21⁄2” Acrylic
31⁄2” Glass

WindoW

21⁄2” 2.0 lb.
31⁄2” 2.5 lb.

2.02

0.32

5

180

15

25

30

1/2NPT

kPa

120

MARSH

psi

60

2.02

0.32
1/2NPT

RED POINTERS

DIAL, WHITE WITH
BLACK CHARACTERS

Y22026

.8751.06 1.94

2.65

.312 OD

BULB

9/16 SQUARE

1/4 NPT

ALL DIMENSIONS ARE NOMINAL

80

35

40

67