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EPDT-241
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6. Installation
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Fig. 3 reference.
Warning
1. Do not install any closing device such as a stop valve at inlet and outlet sides of the product.
2. Install an exhaust pipe on outlet side of the product, 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 case of fluid blow out.
3. Do not disassemble the product unnecessarily.
* Failure to follow this notice may prevent the product from functioning properly and lead to danger.
4. Regarding applicable fluid, viscous fluid that may make fixation of the valve and valve seat cannot be
used.
* Failure to follow this notice may make valve and valve seat fixed and prevent the product from
functioning properly.
Caution
1. Before installing the product, remove foreign substances and scale from the piping.
* Failure to follow this notice may prevent the product from functioning properly due to foreign
substance, etc. Note that the customer will be required to pay repair charge for any defect that
occurs due to foreign
matter.
2. When installing the product, confirm the direction of fluid flow with the inlet and outlet of the product
respectively, and install the product correctly.
* Failure to follow this notice may prevent the product from functioning properly.
3. Install the product vertically with the cap [3] facing upward.
* Failure to follow this notice may prevent the product from functioning properly.
4. Securely support and fasten the pipes (Regarding pipe mount and exhaust pipe, see the below).
* If an excessive stress is applied to the product, the product may be deformed and not close.
5. Lead exhaust pipe to outside of buildings if the product is installed on a place where there is a risk
that fluid blowout causes alarm activation or contamination of the peripheral equipment.
* Improper placement may cause contamination of the peripheral equipment.
6. Connect the product to the pipes securely.
* Improper connecting may cause fluid leakage from the connection when vibration is applied, or may
cause scalds in case that fluid is hot.
7. If there is a risk that condensate or rain water accumulates in exhaust pipe, set a drain pipe in a
position where they can be drained.
* Failure to follow this notice may cause rust and result in malfunction.
8. Inner diameters of pipe mount and of exhaust pipe shall be equal to or more than those of each inlet
and outlet of the product.
* Failure to follow this notice may result in malfunction or insufficient amount of blowout.
Pipe mount of safety relief valve
1. Pipe mount should have sufficient strength and rigidity against shear stress, compressive stress
and bending stress which are induced by reaction force in opposite direction of the exhaust
through the axis of the exhaust pipe.
2. Pressure loss in pipe mount leads to decrease in the discharge amount and to unstable
operation of the product. To prevent them from happening, install the product vertically
as close as possible to the can body and the header. In addition, install the product in a
position where maintenance and inspection can be done easily.
3. Inner diameter of pipe mount shall be more than that of the product inlet.
Exhaust pipe of safety relief valve
1. Install exhaust pipe and drip pan elbow so that the product cannot be subject to the
stress caused by thermal expansion of the equipment and by expansion or contraction of
the exhaust pipe due to thermal action of blowout.
2. Inner diameter of exhaust pipe shall be more than that of the product outlet to avoid
improper back pressure.
