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Watts LFDPTG-3 User Manual

Series lfdptg-3, Lead free, For hydronic boiler & hvac applications

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Series LFDPTG-3

Center Back Entry Combination

Pressure/Temperature Gauges

Dial Sizes: 2

1

/

2

" and 3" (65 and 80mm)

Series LFDPTG-3 Combination Pressure and Temperature

Gauges are used in commercial, residential, and institutional

HVAC applications. These gauges are center back entry type

models with black enamel steel cases, Kostil Polymer windows,

1

/

2

" NPT connections, copper alloy Bourdon tube

pressure elements, and bimetal spiral springs. The LFDPTG-3

features Lead Free* construction to comply with Lead Free*

installation requirements. Accuracy is ASME, Type B. Series

LFDPG-5 gauges are available in various pressure rating scales.

The dual scale features PSI and kPa measurements.

Features

• Black enamel steel case
• Kostil polymer window
• Copper alloy Bourdon pressure element
• Bimetal spiral spring temperature element
• Tin alloy welding

1

/

2

" Lead Free Brass NPT connection

• ASME Type "B" accuracy

Models

LFDPTG-3-

Center back entry

LFDPTG-3A- Center back entry with extended

temperature element

LFDPTG-3L-

Center back entry with extended mounting nut

Approvals

Certified by The Northern Certification Society of Italy

(Det Norske Verita Italia S.r.l.)

Standards

ASME B40.100

Temperature

Working Temperature: 60°F – 320°F (20°C – 160°C)

For Hydronic Boiler & HVAC Applications

ES-LFDPTG-3

Job Name –––––––––––––––––––––––––––––––––––––––––––

Contractor ––––––––––––––––––––––––––––––––––––––––––––

Job Location –––––––––––––––––––––––––––––––––––––––––

Approval –––––––––––––––––––––––––––––––––––––––––––––

Engineer –––––––––––––––––––––––––––––––––––––––––––––

Contractor’s P.O. No. ––––––––––––––––––––––––––––––––––

Approval –––––––––––––––––––––––––––––––––––––––––––––

Representative ––––––––––––––––––––––––––––––––––––––––

Materials

Case:

Black enamel steel

Window:

Kostil polymer

Pressure Element:

Copper alloy Bourdon tube

Temperature Element: Bimetal spiral spring
Welding:

Tin alloy

Connector:

Lead Free Brass

3" (80 mm)

LFDPTG3 2

1

/

2

" (65 mm)

Dial

Dial

Watts product specifications in U.S. customary units and metric are approximate and are provided for reference only. For precise measurements,
please contact Watts Technical Service. Watts reserves the right to change or modify product design, construction, specifications, or materials with-
out prior notice and without incurring any obligation to make such changes and modifications on Watts products previously or subsequently sold.

LEAD FREE

*

* The wetted surface of this product contacted by consumable

water contains less than 0.25% of lead by weight.