Valves CHECK VALVES

Inexpensive positive-seal ABS plastic check valves prevent drainback from vertical condensate lines into pump reservoir. Inlet is nominal pipe thread, outlet is hose fitting for 3/8” ID tubing.

CAT. NO. MFG. NO. DESCRIPTION 2R318

VCV-3 1/4” MPT-3/8” hose PVC PLASTIC VALVES

BALL CHECK VALVE Slip x Slip-Horizontal or Vertical CAT. NO.

3K140

SIZE EACH 3/4”

BALL VALVES Slip x Slip

Rating at 73°F is 150 PSI. Rating at 140°F is 50 PSI.

CAT. NO. 3K136 3K137 3K138 3K139

SIZE 3/4” 1”

1-1/4” 1-1/2”

EACH $6.67 $7.08

$22.45 $33.76

CPVC PLASTIC BALL VALVES CAT. NO.

4K008 4K015

SIZE EACH 1/2” 3/4”

$6.42 $8.19

$10.22

CAT. NO. 2K886 2K887 2K328 2K329

EACH $21.74

CAT. NO. MFG. NO. SIZE 2K916 1604

RADIATOR RETURN UNIONS 150 lb. steam and water.

MAX. PRESSURE psig STEAM

3/4” 90° 150

MAX. PRESSURE psig WATER 150

EACH $16.45

RADIATOR SPUD WRENCH

Made of bright plated malleable iron for use as “S” wrench. Re- moves many old style spuds from radiation.

CAT. NO. DESCRIPTION 1X1506

Radiator Spud Wrench

EACH $24.35

PET COCKS SIZE

1/8” MPT x Discharge Orifice 1/4” MPT x Discharge Orifice 1/8” MPT x 1/8” FPT 1/4” MPT x 1/4” FPT

EACH $11.59 $12.43 $16.84 $15.48

CHECK THE WATER IN BOILERS DURING ANNUAL MAINTENANCE

We sometimes hear from techs that are checking antifreeze for effective freeze temperatures, but no one has ever called regarding a water check in a hydronic, or steam boiler..

don’t hear about that. However, a simple procedure that should be done on all hydronic, and steam, boiler water is a “PH” checkup.

Maybe techs are sending samples of the water for chemical analysis and we simply Most service Tech’s

believe the grey, dinghy water normally found in a boiler after it has been operating for a length of time is good. Well…it may not be! “PH” (hydrogen potential) is an indicator of alkalinity, or acidity of the water. Too much of either can be harmful to the system. A “PH” level of 7 is considered neutral. Levels lower than 7 are acidic, and levels higher than 7 are alkaline. As “PH” levels approach 0, nasty acid is formed which will attack the system components. As levels move toward the opposite end, towards 12, the system water becomes highly alkaline. Simply flushing the boiler and introducing new water does not guarantee a neutral “PH”, as the freshly introduced water must be checked for its “PH” level.

Even though the “PH” level of the system may have been neutral when last checked, the “PH” level in a system changes over a pe- riod of time due to interaction with the various materials comprising the system. Old, new, and especially systems with aluminum block boilers, should be checked for proper “PH” levels as part of their annual maintenance inspection.

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VALVES, PIPE & FITTINGS