Table 5 — Piping Components (cont)

 

 

SYMBOL/SKETCH

DESCRIPTION

 

CV FACTOR

RATING*

STEAM

 

 

1/

2

in.

 

3/ in.

PSI

F

USE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4

 

 

 

 

 

 

 

 

PRESSURE TEST PORT: Brass body 1/ in.

 

 

 

 

 

 

 

 

 

 

 

 

 

4

 

 

 

 

 

 

 

 

 

 

 

 

 

service access fitting with removable depres-

 

 

 

 

 

 

 

 

 

 

 

 

 

sor type core.

 

 

 

 

 

 

 

 

 

 

 

 

 

Application — Installed on both sides of the

N/A

 

N/A

400

210

NO

 

 

 

 

 

coil to allow for pressure sensing. Attach

 

 

 

 

 

 

 

 

 

 

 

 

 

pressure gages to facilitate close tolerance

 

 

 

 

 

 

 

 

 

 

 

 

 

water balancing.

 

 

 

 

 

 

 

 

 

 

 

 

 

GAGE COCK: Brass shut-off valve with

 

 

 

 

 

 

 

 

 

 

 

 

 

1/ in. FPT fitting for attachment of pressure

 

 

 

 

 

 

 

 

 

 

 

 

 

4

 

 

 

 

 

 

 

 

 

 

 

 

 

gages.

 

 

 

 

 

 

 

 

 

 

 

 

 

Application — Installed on both sides of the

N/A

 

N/A

200

250

N/A

 

 

 

 

 

coil to allow for pressure sensing. Attach

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

pressure gages to facilitate close tolerance

 

 

 

 

 

 

 

 

 

 

 

 

 

water balancing. May be used in bleed

 

 

 

 

 

 

 

 

 

 

 

 

 

bypass line to regulate water flow.

 

 

 

 

 

 

 

 

 

 

 

 

 

CIRCUIT SETTER: Variable water flow bal-

 

 

 

 

 

 

 

 

 

 

 

 

 

ancing valve with manual adjustment knob,

 

 

 

 

 

 

 

 

 

 

 

 

 

pointer, percent-open scale, memory stop

 

 

 

 

 

 

 

 

 

 

 

 

 

and integral pressure read-out ports.

2.12

 

3.9

300

250

NO

 

 

 

 

 

Application — Used for close tolerance water

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

flow balancing. Positive shut-off ball valve

 

 

 

 

 

 

 

 

 

 

 

 

 

feature allows usage as combination balanc-

 

 

 

 

 

 

 

 

 

 

 

 

 

ing and shut-off valve.

 

 

 

 

 

 

 

 

 

 

 

 

 

BALANCE VALVE: Variable water flow man-

 

 

 

 

 

 

 

 

 

 

 

 

 

ual balancing valve with screwdriver slot

 

 

 

 

 

 

 

 

 

 

 

 

 

adjustment screw.

 

 

 

 

 

 

 

 

 

 

 

 

 

Application — Often used in conjunction with

 

 

 

 

 

 

 

 

 

 

 

 

 

test port fittings for water flow balancing. Bal-

3.0

 

8.9

150

200

NO

 

 

 

 

 

ance by temperature differential or coil pres-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

sure drop (check specifications for service

 

 

 

 

 

 

 

 

 

 

 

 

 

fittings required if balancing by pressure

 

 

 

 

 

 

 

 

 

 

 

 

 

drop). May be used in 3-way valve bypass

 

 

 

 

 

 

 

 

 

 

 

 

 

line to permit equal flow balancing.

 

 

 

 

 

 

 

 

 

 

 

 

 

FIXED FLOW VALVE: Flexible orifice type

Valve orifice size

 

 

 

 

 

 

 

 

(non-adjustable).

determines CV fac-

 

 

 

 

 

 

 

 

Application — Used for water flow balancing.

tor. The orifice of

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Valve automatically adjusts the flow to within

these fixed flow

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

valves changes as

 

 

 

 

 

 

 

 

10% of set point. Requires 15 psi

 

 

 

 

 

 

 

 

flow is regulated.

 

 

 

 

 

 

 

 

(35 ft) of additional pump head for proper

 

 

 

 

 

 

 

 

As the water pres-

 

 

 

 

 

 

 

FLOW

operation.

 

 

 

 

 

 

 

sure increases,

150

160

NO

 

 

 

 

 

 

 

 

 

 

 

 

the orifice size

 

 

 

 

 

 

 

 

 

decreases,

 

 

 

 

 

 

 

 

 

 

thereby automati-

 

 

 

 

 

 

 

 

 

cally limiting the

 

 

 

 

 

 

 

 

 

flow rate to the

 

 

 

 

 

 

 

 

 

specified gpm

 

 

 

 

 

 

 

 

 

(±10%).

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LEGEND

Cv — Coefficient of Velocity

DX — Direct Expansion

*Check all system component pressure ratings (coils, values, pumps, etc.) with manufacturer and any applicable local or national piping codes prior to specifying system pressure rating.

NOTES:

1.Motorized 2-way valves have a maximum close-off differential of 25 psi.

2.Motorized 3-way valves have a maximum close-off differential of 10 psi.

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Carrier 42V, 42C, 42S, 42D specifications Pressure Test Port Brass body 1
Page 50 Page 52

42V, 42D, 42S, 42C specifications

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