Watts IWTG User Manual
Hose connection gauges
For Commercial, Residential and Institutional Applications
ES-276H300-IWTG
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.
Series 276H300,
IWTG
Hose Connection Gauges
Dial Size: 2
1
⁄
2
" (65mm)
Series 276H300 and IWTG Hose Connection Gauges are
used to test water supply pressures within a distribution
system. The 276H300 and IWTG gauges have red indica-
tor hands that hold at the highest reading registered for
detection of thermal expansion pressure surges. Both the
276H300 and IWTG series feature black enamel steel cases,
Kostil Polymer windows,
3
⁄
4
" (20mm) H.T. hose connections,
and copper alloy Bourdon tube sensing elements. Accuracy
is ASME, Type B. Series IWTG gauges are available in a 0 to
200psi (13.8 bar) pressure rating scale. The Series 276H300
gauges are available in a 0 to 300psi (20.7 bar) pressure
rating scale.
Features
• Black enamel steel case
• Kostil polymer window
• Copper alloy Bourdon sensing element
• Tin alloy welding
•
3
⁄
4
" (20 mm) H.T. hose connection
• ASME Type “B” accuracy
Models
276H300 – 0 - 300psi (20.7 bar) pressure rating scale
IWTG –
0 - 200psi (13.8 bar) pressure rating scale
Approvals
Certified by The Northern Certification Society of Italy
(Det Norske Verita Italia S.r.l.)
Standards
ISO 9002 quality standard
ASME B40.100
Temperature
Working Temperature: 40°F to 140°F (4°C to 60°C)
276H300
Job Name ––––––––––––––––––––––––––––––––––––––––––– Contractor
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Job Location ––––––––––––––––––––––––––––––––––––––––– Approval
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Engineer –––––––––––––––––––––––––––––––––––––––––––––
Contractor’s P.O. No. ––––––––––––––––––––––––––––––––––
Approval ––––––––––––––––––––––––––––––––––––––––––––– Representative
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