Submittal Sheet

JOB: REPRESENTATIVE:
UNIT TAG: SUBMITTED BY: DATE:
ENGINEER: APPROVED BY: DATE:
CONTRACTOR:
Patent No. 3,294,114
DESCRIPTION
B&G diaphragm operated cast iron and diaphragm-
assist operated
bronze ASME Safety Relief Valves are designed to protect fired and
unfired hot water pressure vessels against over-
pressure conditions.
These valves feature a unique failsafe disc with sufficient area to permit
the valves to maintain their safety relief function in the event of a
diaphragm rupture. These valves are designed, manufactured, tested
and labeled in accordance with the requirements of Section IV of the
ASME Boiler and Pressure Vessel code. They are offered in a wide
range of capacities to permit a close match with the boiler output rating.
OPERATING DATA
MODEL
MAXIMUM WORKING
PRESSURE
MAXIMUM OPERATING
TEMPERATURE
790
125 PSIG (8.6 bar) 250°F (121°C)
1170
3301
50 PSIG (3.4 bar) 250°F (121°C)
4100
CONSTRUCTION
790 & 1170
Body: Brass
Diaphragm & Seat: EPDM
Internal Wetted Parts: Brass
3301 & 4100
Body: Cast Iron
Diaphragm & Seat: EPDM
Internal Wetted Parts: Brass
DIMENSIONS & WEIGHTS
MODEL
NUMBER*
BODY
DIMENSIONS-INCHES (mm)
APPROXIMATE
SHIPPING
WEIGHT LBS.
(kg)
NPT CONNECTIONS
A B C D E FINLET OUTLET
790 BRONZE 3/4 3/4
2-9/16
(65.1)
1-1/2
(38.1)
3/4
(19.1)
4-9/16
(115.9)
1-1/32
(26.2)
2-3/16
(55.6)
1.2
(0.5)
1170 BRONZE 1 1
2-7/8
(73.0)
1-3/4
(44.5)
7/8
(22.2)
4-15/16
(125.4)
1-1/32
(26.2)
2-7/16
(61.9)
1.5
(0.7)
3301 IRON 1-1/2 2
6
(152.4)
2-7/8
(73.0)
3-1/4
(82.6)
11
(279.4)
N/A N/A
17
(7.7)
4100 IRON 2 2
6
(152.4)
2-7/8
(73.0)
3-1/4
(82.6)
11
(279.4)
N/A N/A
17
(7.7)
*Actual unit model numbers include individual valve pressure settings as a suffix to the basic valve model number noted.
Do Not Use For Construction. Dimensions are approximate and subject to change. Contact factory for certified dimensions.
TYPICAL SPECIFICATIONS
Furnish and install as shown on plans a diaphragm operated
Safety Relief Valve, ASME labeled for relieving pressure of psig
_____ with a rating of ________ BTU/Hr. The fluid should not
discharge into the spring chamber. The valve should have a low
blow-down differential.
The valve seat and all moving parts exposed to the fluid are to be
of non-ferrous material.
Manufacturer ITT Bell & Gossett Model No. __________ ASME
Safety Relief Valve set at __________psig, rated at
__________BTU/Hr.
© COPYRIGHT 2003 ITT INDUSTRIES, INC.