Figure 4 - Burst Disc
Burst Disc
A burst disc is factory fitted to every valve assembly�� It
is designed to rupture when the container becomes over
pressurised when subjected to temperatures above the
designed storage temperature of the container��
Principle of Operation
The FM-200
®
valve is a high-flow-rate device specially
designed for use in fire systems�� Operation is by means of
a pressure-differential piston�� Container pressure is used
within the valve to create a positive force on the piston,
sealing the valve closed�� Operation of the valve occurs
when the upper chamber is vented faster than the ‘make
up device’ in the shuttle can replace the pressure�� Thereby
allowing, the shuttle to be forced up, and free flow of FM-
200
®
from the valve�� Upper chamber pressure is released
by the electrical, mechanical or pneumatic actuator��
The valve incorporates the following features:
A pressure operated safety release device (burst disc)��
Main outlet, fitted with anti-recoil cap��
A connection for a pneumatic, mechanical or
electrical actuator, fitted with safety cap��
A connection for an electrical solenoid��
A connection for the pneumatic actuation port��
•
•
•
•
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13
© 2010 Macron Safety Systems (UK) Limited
SECTION 2 - SYSTEM COMPONENTS
EQUIPMENT:
FM-200® (UL/FM)
PUBLICATION:
14A-07H
ISSUE No.
02
DATE:
2010-03
Burst Disc for 2 mm (1”) Valve
Part No. 2091
Burst Disc for 0 mm (2”) Valve
Part No. 2091
Burst Disc for 0 mm (3”) Valve
Part No. 1330
Technical Information
2 mm (1”) Valve & 0 mm (2”) Valve
Body:
Brass CZ 121
Rating:
3.4 bar (774. psi) @ 0 °C (122 °F)
Thread:
M1 x 1.00
Hole Orientation:
90° to Body
Torque:
3 Nm (2. Ibs.ft)
Overall Size :
20mm (L) x 1mm (Dia)
(0.79” (L) x 0.71” (Dia))
Weight:
0.02 kg (0.02 lbs)
0 mm (3”)Valve
Body:
Brass UNS-C3000
Rating:
2 bar (70 psi) @ 0 °C (122 °F)
Thread:
0.937-1UN-3A
Hole Orientation:
90° to Body
Torque:
Nm (0 Ibs.ft)
Overall Size :
33.3mm (L) x 1mm (Dia)
(1.312” (L) x 0.71” (Dia))
Weight:
0.0 kg (0.19 lbs)
