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6.1 Piping example
6.2 Precaution for installation
1. Since the product is heavy, securely support it using lifting devices or the like when installing. See the
product weight specified in "4. Dimensions and Weights" on Page 5.
* Failure to follow this notice may cause a falling accident of the product, resulting in an injury.
2. Connect a blow-off pipe to the outlet side of safety relief valve, and lead it to a place where there is no
risk of physical damage even if fluid blows out.
* Failure to follow this notice may result in injury and scalds in the event that high temperature fluid
blows out.
1. Do not disassemble the product unless it is necessary.
* Failure to follow this notice may prevent the product from functioning properly.
2. Before installing the product in the piping, be sure to remove foreign substances and scale from the
piping.
* Failure to follow this notice may prevent the product from achieving its intended performance due to
the ingress of foreign substances and scale into the product.
3. Be sure to install a strainer at the inlet side of the product.
* Failure to follow this notice may prevent the product from achieving its intended performance due to
the ingress of foreign substances and scale into the product. It is recommended to use a strainer of 40
mesh or more.
5. Operation
Spring [35] is compressed by adjusting screw
[32] and make diaphragm [16] pushed down, and
thereby open disc [12] directly connected to it.
Fluid coming in from the inlet side flows out
from the upper part of disc [12] to the outlet side,
and passes
detection hole, and is led to the bottom of
diaphragm [16].
Load of spring [35] and the reduced pressure
act to diaphragm [16], and the upper and lower
force keeps a balance and regulates the valve
opening. As a result, diaphragm [16] keeps
reduced pressure constant.
6. Installation
Warning
Caution
8
through
the
reduced pressure
EPDT-278
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