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Honeywell Combination gas valve VS820A1054/U

SKU VS820A1054/U Brand Honeywell

Photos

Key specifications

Connection thread	3/4" NPT (inlet and outlet)
Outlet Orientation	side outlets 1/2" NPT
Ambient temperature	0–79 °C
Gas type	natural gas
Pilot type	continuously burning pilot (standing pilot)
Installation angle limit	up to 90°
Adjustment access location	top panel
Manual ignition sequence	OFF-PILOT-ON

all specifications (8) ↓

1796.85 EUR

1633.50EUR

in stock · 2

incl. 21% VAT · 1350.00 EUR excl. VAT · shipping calculated at checkout

Worldwide shipping from stock
Original manufacturer part
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Description

Combination gas valve for natural gas systems with a continuously burning pilot. It has 3/4" NPT inlet and outlet connections, plus two 1/2" NPT side outlets. The manual control sequence is OFF-PILOT-ON. Operating ambient temperature is 0–79 °C. Installation is allowed at an angle of up to 90°, and all adjustments are on the top panel.

Further details

Application	gas boilers, water heaters, floor heaters
Built-in components	manual gas cock, pilotstat safety mechanism, 750 mV solenoid valve, pressure regulator
Included Components	adapter bushings 3/4" to 1/2" and 1/2" to 3/8"
Power supply type	thermopile (powerpile), no external electrical power
Safety Feature	automatic fuel shut-off if pilot flame goes out or gas pressure drops

Choosing and fitting

Valves of this kind are selected by connection thread size, coil voltage, and functional requirements (single or double solenoid, slow-opening, servo-regulated, or multiblock). The coil is often replaceable separately from the valve body. Before ordering, verify that the replacement matches the original's connection size, voltage, and features, and is compatible with the existing burner control and gas pressure switch.

Signs of failure

Common failure modes in valves of this kind are coil burnout, leaking valve seat, drifting outlet pressure, or seized servo regulator. Such faults may show up as the burner failing to light, irregular flame, or safety shut-off. Before replacing the part, test the coil/seat and verify the outlet pressure.

All specifications

Connection thread	3/4" NPT (inlet and outlet)
Outlet Orientation	side outlets 1/2" NPT
Ambient temperature	0–79 °C
Gas type	natural gas
Pilot type	continuously burning pilot (standing pilot)
Installation angle limit	up to 90°
Adjustment access location	top panel
Manual ignition sequence	OFF-PILOT-ON

Part numbers

SKU	VS820A1054/U
Additional article	534.322.031