SYMBOL/SKETCH | DESCRIPTION | CV FACTOR | RATING | STEAM | |||
1¤2 |
| 3¤4 | PSI | F | USE | ||
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| PRESSURE TEST PORT: Brass body |
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| 1¤4 service access ®tting with |
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| removable depressor type core. |
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| Application - Installed on both sides of | N/A |
| N/A | 400 | 210 | NO |
| the coil to allow for pressure sensing. |
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| Attach pressure gages to facilitate |
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| close tolerance water balancing. |
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| GAGE COCK: Brass |
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| with 1¤4 FPT ®tting for attachment of |
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| pressure gages. |
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| Application - Installed on both sides of | N/A |
| N/A | 200 | 250 | N/A |
| the coil to allow for pressure sensing. |
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| Attach pressure gages to facilitate |
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| close tolerance water balancing. May |
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| be used in bleed bypass line to |
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| regulate water ¯ow. |
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| CIRCUIT SETTER: Variable water |
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B + G | ¯ow balancing valve with manual |
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| adjustment knob, pointer, |
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| scale, memory stop and integral |
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| pressure | 1.95 |
| 4.15 | 200 | 250 | NO |
| Application - Used for close tolerance |
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| water ¯ow balancing. Positive |
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| ball valve feature allows usage as com- |
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| bination balancing and |
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| BALANCE VALVE: Variable water |
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| ¯ow manual balancing valve with |
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| screwdriver slot adjustment screw. |
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| Application - Often used in conjunction |
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| with test port ®ttings for water ¯ow | 3.0 |
| 8.9 | 150 | 200 | NO |
| balancing. Balance by temperature |
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| differential or coil pressure drop (check |
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| speci®cations for service ®ttings |
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| required if balancing by pressure drop). |
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| May be used in |
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| line to permit equal ¯ow balancing. |
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| FLOW SETTER: Variable water ¯ow |
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| manual balancing valve with |
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| screwdriver slot adjustment and direct | 2.2 |
| 5.4 | 125 | 210 | NO |
| gpm |
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| Application - Used for water ¯ow |
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| balancing (8.0 gpm maximum). |
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| FIXED FLOW VALVE: Spring and | Valve ori®ce size |
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| insert type | determines CV |
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| Application - Used for water ¯ow | factor. The ori®ce | 125 | 240 | NO | ||
| balancing. Valve automatically adjusts | of these ®xed ¯ow | |||||
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| valves changes as |
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| the ¯ow to within 10% of set point. Not |
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| ¯ow is regulated. |
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| available for ¯ow rates above 8 gpm. |
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| As the water |
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| FIXED FLOW VALVE: Flexible ori®ce | pressure increases, |
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HAYES | type | the ori®ce size |
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| Application - Used for water ¯ow | decreases, thereby |
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| automatically |
| 150 | 160 | NO | ||
| balancing. Valve automatically adjusts | limiting the ¯ow | |||||
| the ¯ow to within 10% of set point. | rate to the |
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| Requires 15 psi (35 ft) of additional | speci®ed gpm |
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| pump head for proper operation. | (+/210%). |
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25
