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Boiler & Heating Accessories

The controls, valves and safeties that make a boiler run right, expansion tanks, feeders, cut-offs and relief valves from the trades' trusted brands.

Boiler & heating accessories at Raly Plumbing Supply
Everything for the Boiler Room

Controls, Valves & Safeties

From expansion tanks and feed valves to low-water cut-offs and automatic feeders, we stock the parts that keep a heating system running safely and efficiently. Bring in your old part number and we'll cross-reference it right at the counter.

Expansion Tanks

Absorb thermal expansion & protect the system.

Heating Expansion Tanks

  • HGT-60
  • HGT-30
  • HGT-15
Domestic

Domestic Expansion Tank

  • HGTE-5
  • For potable / domestic water

Feed, Fill & Backflow

Pressure-reducing, dual-control & backflow protection.

Boiler Feed Valve

PRV12 Pressure Reducing Valve

  • Set at 14–17 lbs
  • Range 10–25 psi
  • 1/2″ FPT × FPT
Backflow Preventer

Dual Check w/ Vent

  • Inline design
  • 1/2″ FPT × FPT
Dual Control Valve

1/2″ S1450F Fill & Relief

  • Fill + relief combination
  • FPT × Sweat
  • Reducing valve 12–15 lbs · relief 30 lbs

Relief Valves

Pressure & temperature safety.

Boiler Relief Valves

  • 15 PSI model
  • 30 PSI model

T&P Relief Valve

  • For hot water heaters
  • 150 psi

Adjustable Relief Valve

  • 50–175 PSI range

Air & Vent Control

Purge air, keep water moving.

No. 67 Automatic Vent Valve

  • Automatic air venting

Float Vent

  • 1/8″ straight MPT

Air Scoop

  • 1/8″ FPT top inlet
  • 1″ & 1 1/4″

Air Separator

  • Built-in vent valve
  • 3/4″, 1″ & 1 1/4″

Automatic Water Feeders

Keep the boiler at the right water level.

Hydrolevel

VXT Series Feeder

  • VXT-24 (24V)
  • VXT-120 (120V)
  • Includes (2) 1/2″ × 3/8″ Cxm adapters
McDonnell & Miller

WFE Series Feeder

  • WFE-24 (24V)
  • WFE-120 (120V)
  • Includes (2) 1/2″ × 3/8″ Cxm adapters

Low Water Cut-Offs

Critical safety, shut down on low water.

Hydrolevel

CG-400 / CG-450

  • CG-400 (24V, 3/4″ MPT)
  • CG-450 (120V, 3/4″ MPT)
Hydrolevel Safgard

CG-700 / CG-750 & 1100 Series

  • CG-700 (Manual Reset 24V)
  • CG-750 (Manual Reset 120V)
  • 1100 · 1100M · 1150 · 1200
McDonnell & Miller

PS-802 · RB-24E · 67 · 47-2

  • PS-802-24 & PS-802-RX2-24
  • RB-24E (24V, 3/4″ MPT)
  • 67 LWCO · 47-2 LWCO / Feeder
Servicing a boiler? We carry the matching gaskets, probes, adapters and fittings so you leave with a complete repair, not a second trip.

Can't Find the Control You Need?

Bring in the old part number, we'll cross-reference it at the counter.

Call 718-738-0433Boilers