Emergency Shutoff Valve

equal-percentage type valve to function properly.

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Note: Control valve delta P @ design load (valve

full open) shall not be less than 34 kPa 5 psi. If

the control valve available differential pressure

drop with valve full open is less than 34 kPa 5 psi,

it is necessary to provide a pump sized for the

specific branch (loop) only, which does not affect

other system branches, to boost the available

pressure.

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Two-way, single seated, equal percentage-flow type, industrial quality flow

regulating (control) valve conforming to the materials specified herein,

and size selected by the valve manufacturer for the following conditions:

a.

Maximum flow rate: [_____] L/s Gpm

b.

Minimum flow rate: [_____] L/s Gpm

c.

Internal pressure: [_____](maximum operating) kPa Psi

d.

Pressure differential @ design load:

[_____](open) delta p, kPa

Psi

e.

Pressure Differential @ minimum load: [_____] (closed) delta p,

kPa Psi (Equal to pump head or controlled differential pressure in

variable volume flow system)

Provide automatic operator with manual override (handwheel) and position

indicator.

2.1.7.4

Emergency Shutoff Valve

[HTW] [MTW] automatic, quick closing, ball valve located between the manual

[HTW] [MTW] supply shutoff valve and the system terminal unit inlet, with

pressure/temperature sensor located on the shell side. Emergency valve

shall automatically close when the pressure/temperature setting of the

shell side safety relief valve is reached. Emergency Valve shall be

normally open.

2.1.8

Strainers

Body materials shall conform to ASME B16.34, Fine Mesh type strainer and

trim shall be Type 304 or 316 stainless steel, selected for the service

specified herein.

2.1.9

Joints

2.1.9.1

Welded Joints

Joints between sections of pipe and between pipe and fittings shall be

welded. Joints between pipe and valves shall be welded or flanged. The

welding shall conform to requirements of paragraph entitled "Responsibility

of Contractor for Fusion Welding." Branch connections may be made with

either welding tees or forged branch outlet fittings, either being

acceptable without size limitations. Branch outlet fittings where used

SECTION 15184N

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