BASO Gas Products — Johnson Controls Brand · Stocking Distributor · Memphis, TN

BASO Gas Products —
H15 Pilot Safety Valves, K Series Thermocouples & Gas Valves

Memphis Control Center stocks BASO Gas Products for commercial and industrial standing pilot gas applications — H15 Series automatic shutoff pilot gas valves (thermocouple-powered, 100% gas shutoff), K Series thermocouples (K15, K16, K19 in multiple lengths), J Series pilot burners, H91 single solenoid gas valves, G93/G96 combination gas valves, and BGA Series gas valves. BASO is a Johnson Controls brand — the standard for standing pilot safety controls on commercial cooking equipment, boilers, heaters, kilns, and industrial ovens. Free same-day shipping from Memphis, TN since 1967.

Need Help Finding a Part? Call (901) 458-2000
BASO Gas Products — Johnson Controls Brand H15 Pilot Valves · K Series Thermocouples Natural Gas · LP · LP-Air Mix Free Same-Day Shipping
100% Gas ShutoffH15 Series pilot valves shut off both pilot and main burner gas if the thermocouple flame is extinguished
Thermocouple-PoweredNo electricity required — the H15 is powered entirely by millivolt output from the pilot thermocouple
Full System ComponentsH15 valves, K series thermocouples, J series pilot burners, solenoid gas valves — complete standing pilot system
Same-Day ShippingOrders by 2 PM CT ship same day — always free

H15 Series — Automatic Shutoff Pilot Gas Valve

The BASO H15 Series is the most widely used thermocouple-powered pilot safety valve in the commercial and industrial gas equipment industry. The H15 is powered entirely by millivolt output from the pilot thermocouple — no external electricity required. If the pilot flame is extinguished, thermocouple output drops, the valve closes, and 100% gas shutoff to both the pilot and main burner occurs automatically. Call us with your equipment make and model for the correct H15 variant.

Pilot Safety Valve H15 Series — How It Works

Thermocouple-powered, 100% shutoff, standing pilot safety valve. Operation: Press and hold the reset button to allow gas flow to the pilot only (internal flow design). Light the pilot burner. The thermocouple heats up and generates millivoltage that holds the safety valve electromagnet open. Release the reset button — if the pilot is burning correctly, the valve stays open. If the pilot goes out at any time, thermocouple output drops, the electromagnet releases, and the valve closes — shutting off 100% of gas to both pilot and main burner.

Applications: Commercial cooking equipment (fryers, ranges, griddles, ovens), boilers, unit heaters, kilns, dishwashers, industrial ovens, agricultural heaters.

Key specs: Natural gas and LP gas. Max 0.5 PSI (14" W.C.) inlet pressure. Cast aluminum body. Mounts in any position. Ambient temperature: standard models 30°–175°F, high-temp models 32°–300°F. Certifications: CSA; UL (H15CA and DA models); CE/UKCA (models without pilot adjust valve).

100% Gas Shutoff No Electricity Required Natural Gas · LP · LP-Air Mix Max 0.5 PSI / 14" W.C. CSA · UL (CA/DA) · CE/UKCA Standard: 175°F · Hi-Temp: 300°F
Select by Pipe Size H15 Variants — Pipe Size & BTU

The H15 model suffix identifies the pipe connection size and body type. Common configurations on our site:

H15AB — 3/8" threaded, internal flow, 160,000 BTU/hr
H15CA / H15CB — 3/8" NPT variants with different body options
H15CQ / H15HQ — 3/8" NPT, Q suffix = quick-connect thermocouple
H15 sizes available: 1/4", 3/8", 1/2", 3/4", and 1" NPT
H15DA — 3/4" NPT, internal flow, 335,000 BTU/hr
H15FA — 1" NPT, larger capacity
The letter suffix also indicates internal vs. external pilot flow and rotor B (pilot adjustment) option. The "5" number in the suffix (e.g. H15HQ-5C) indicates the thermocouple connection type.

H15AB — 3/8" · 160k BTU H15DA — 3/4" · 335k BTU H15FA — 1" NPT H15HQ — 3/8" Quick-Connect

H15 Series — Common Models on Our Site

ModelPipe SizeCapacityNotesShop
H15AB-63/8" threaded160,000 BTU/hrInternal flow · standard thermocouple connectionShop
H15AB-6D3/8" threaded160,000 BTU/hrD suffix = different thermocouple connectionShop
H15CA-5D3/8" NPT—CA body variantShop
H15CB-2C3/8" NPT—CB body · rotor B pilot adjustShop
H15CQ-3C3/8" NPT—CQ body variantShop
H15CQ-3D3/8" NPT—CQ body · D thermocouple connectionShop
H15DA-5D3/4" NPT335,000 BTU/hrLarger capacity internal flowShop
H15HQ-5C3/8" NPT—HQ body · quick-connect thermocoupleShop
H15HQ-5D3/8" NPT—HQ body · D thermocouple connectionShop

Can't find your model? Contact us or call (901) 458-2000 with your equipment make, model, and existing valve part number.

K Series Thermocouples

BASO K Series thermocouples work with the H15 pilot valve to sense pilot flame. When the pilot is lit, the thermocouple hot junction generates millivoltage that holds the H15 open. Select by thermocouple type (K15, K16, K19) and lead length. Contact us with your equipment make and model for the correct type and length.

K15 & K16 Series Standard & Heavy-Duty Thermocouples

K15 Series (K15DA): Standard thermocouple for H15 pilot safety valve applications. Hot junction max 1500°F. Lead lengths: 12", 18", 24", 30", 36", 48". Output: 20–28 mV open circuit, minimum 15 mV at safety turn-down. Connection: 11/32-32 male nut connector. CSA certified. Replaces Johnson Controls K15DS series.

K16 Series: Heavy-duty thermocouple for longer lead requirements. Hot junction max 1500°F. Available in 12"–72" lead lengths (K16: 12–72"). Output: 25–35 mV open circuit, minimum 17 mV at safety turn-down. Same max temperature rating as K15 but higher output range.

Max 1500°F Hot Junction K15: 12"–48" Lengths K16: 12"–72" Lengths CSA · ANSI Z21.20
K19 — Universal K19 Series Universal Thermocouple

K19AT Series: Universal thermocouple for cross-brand replacement — replaces Honeywell Q337, Robertshaw T26, BASO K17, and Johnson Controls K19AA/K19BA/K19CA series. Includes two lead adapters and a spring clip. Hot junction max 1300°F. Lead lengths: 18", 24", 30", 36", 48", 60", 72". Output: 25–35 mV open circuit, minimum 17 mV at safety turn-down. Connection: 11/32-32 male nut connector. Conforms to ANSI Z21.20. Note: K19AT is not CSA certified.

Universal Replacement Max 1300°F Hot Junction 18"–72" · 7 Lengths Replaces Honeywell Q337 · Robertshaw T26 ANSI Z21.20 · Not CSA Certified

K Series Thermocouple Quick Reference

SeriesMax Hot JunctionOutput (Open Circuit)Min at Turn-DownLead Lengths
K141400°F (760°C)20–28 mV15 mVVarious
K15 (K15DA)1500°F (816°C)20–28 mV15 mV12, 18, 24, 30, 36, 48" · Replaces JC K15DS
K161500°F (816°C)25–35 mV17 mV12"–72"
K171300°F (704°C)30–40 mV25 mVVarious
K19 (K19AT)1300°F (704°C)25–35 mV17 mV18, 24, 30, 36, 48, 60, 72" · Replaces Honeywell Q337, Robertshaw T26, BASO K17

BASO recommends using only OEM-specified or BASO thermocouples with BASO H15 valves. Always match the thermocouple type to the original equipment specification. Note: K17 and K19AT series are not CSA certified — specify K15 or K16 where CSA certification is required.

BASO Gas Valve Series

In addition to the H15 thermocouple-powered pilot valve, BASO manufactures electrically-operated solenoid gas valves for OEM applications in commercial cooking, heating, and industrial equipment.

Single Solenoid H91 Series — Auto Single Solenoid Gas Valve

BASO H91 Series — electrically-operated single solenoid automatic gas valve for OEM commercial gas equipment. Normally closed, opens when energized. Common variants on our site: H91DA (most common), H91DG, H91RA, H91WA, H91RS, H91BG, H91BG. Used as main gas valves and secondary safety shutoff valves in commercial cooking equipment gas trains. Available in multiple pipe sizes and voltage ratings.

Single Solenoid Normally Closed Auto Reset H91DA · H91DG · H91RA
Combination Valve G93 / G96 Series — Combination Gas Valves

BASO G93 and G96 Series — single solenoid automatic combination gas valves for OEM commercial gas equipment. These combination valves integrate multiple functions (pressure regulation, safety shutoff, manual shutoff) into a single unit. Used on commercial cooking equipment, fryers, and other gas appliances. Common variants: G93ASL, G96HAA, G96AAQ. The REV B suffix indicates a revised version — specify REV B when ordering.

Combination Gas Valve G93 · G96 Series OEM Commercial Equipment REV B — Current Version
BGA Series BGA110 / BGA171 — Auto Single Solenoid

BASO BGA Series — automatic single solenoid gas valves in a compact configuration. The BGA110 and BGA171 series are used in OEM commercial gas equipment applications. Common models: BGA110EHJ, BGA110EJH, BGA171EDA. Available in multiple configurations — the suffix letters identify the specific valve body, coil voltage, and connection options.

BGA110 · BGA171 Single Solenoid Auto Reset OEM Commercial Equipment
J Series · Pilot Burners J Series Pilot Burners & Y90 Fittings

BASO J Series pilot burners are used with K Series thermocouples and H15 pilot valves to form a complete standing pilot flame sensing system. The J Series burner holds the thermocouple in the correct position relative to the pilot flame for reliable thermoelectric generation. Available in configurations for various OEM equipment. Y90 Series inlet fittings connect the pilot burner to the gas supply. Used for natural gas and LP gas, with matching thermocouples and adapter fittings from BASO.

J Series Pilot Burners Y90 Inlet Fittings Natural Gas · LP Gas Works with K Series TCs

BASO Products — Commonly Ordered

Browse all BASO →
H15HQ-5CPilot Safety Valve · 3/8" NPT · Assembly H15HQ-5DPilot Safety Valve · 3/8" NPT · D Connection H15AB-6Pilot Safety Valve · 3/8" Thread · 160k BTU H15AB-6DPilot Safety Valve · 3/8" Thread · D Connection H15DA-5DPilot Safety Valve · 3/4" NPT · 335k BTU H15CB-2CPilot Safety Valve · 3/8" NPT · Rotor B H91DA-8D REVBSingle Solenoid Gas Valve · Auto H91RA-4C REVBSingle Solenoid Gas Valve · Auto H91BG-2C REVBSingle Solenoid Gas Valve · Auto G93ASL-4C REVBSingle Solenoid Combo Gas Valve G96HAA-4C REVBCombination Gas Valve · Auto G96AAQ-4C REVBCombination Gas Valve · Auto BGA171EDA-1DABCSingle Solenoid Gas Valve · BGA Series BGA110EHJ-1CAACSingle Solenoid Gas Valve · BGA Series K Series ThermocouplesK15 · K16 · K19 · Multiple lengths All BASO ProductsBrowse complete BASO catalog
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Can't find your BASO part number?

Call us with your equipment make, model, and existing part number — we cross-reference Johnson Controls and BASO numbers.

Get Cross-Reference Help Call (901) 458-2000

BASO Gas Products — Frequently Asked Questions

Common questions about BASO H15 pilot valves, K series thermocouples, and gas valve selection. Contact our team or call (901) 458-2000.

How does the BASO H15 pilot safety valve work?

The H15 is thermocouple-powered and requires no external electricity. To light: press and hold the reset button to allow gas to the pilot only, light the pilot, and hold until the thermocouple generates millivoltage. This energizes an electromagnet inside the H15 that holds the valve open. Release the button — if the pilot is burning, the valve stays open. If the pilot goes out, thermocouple output drops, the electromagnet releases, and the H15 closes — 100% gas shutoff to both pilot and main burner. Field repairs are not permitted. If thermocouple output is correct and the valve does not function, replace the entire valve assembly.

What is the difference between BASO K15, K16, and K19 thermocouples?

All three are for standing pilot applications. K15: hot junction max 1500°F, 20–28 mV open circuit, 15 mV minimum at turn-down, 12"–48" lengths. K16: hot junction max 1500°F, 25–35 mV open circuit, 17 mV minimum, 12"–72" lengths — for longer runs. K19AT: universal cross-brand replacement — replaces Honeywell Q337, Robertshaw T26, BASO K17, and Johnson Controls K19 series. Hot junction max 1300°F, 25–35 mV open circuit, 17 mV minimum. Lengths: 18", 24", 30", 36", 48", 60", 72". Includes two lead adapters and spring clip. Note: K19AT is not CSA certified — specify K15 or K16 where CSA certification is required. Always match the thermocouple to the original equipment specification.

What applications use the BASO H15?

The H15 is used in any gas-fired equipment with a standing pilot that requires thermocouple-powered safety shutoff — no electricity needed. Common applications: commercial cooking equipment (fryers, ranges, griddles, ovens, broilers), commercial boilers with standing pilots, unit heaters, kilns, industrial ovens, dishwashers, and agricultural heaters. Rated for natural gas, LP gas, and LP gas-air mixtures at max 0.5 PSI (14" W.C.). Standard ambient temperature range: 30°–175°F; high-temperature models rated to 300°F. For high-pressure gas applications (up to 25 PSI), BASO offers the H19 series.

What does REV B mean on BASO valve part numbers?

REV B designates the current production version of BASO gas valve assemblies. Always specify REV B when ordering H91, G93, G96, or BGA series valves (e.g. H91DA-8D REVB, G93ASL-4C REVB). REV B parts correctly replace earlier versions of the same model.

Is BASO Gas Products the same as Johnson Controls?

BASO Gas Products LLC is a Johnson Controls brand. Products are manufactured and sold under the BASO name as part of the Johnson Controls family of gas control products. Johnson Controls replacement part numbers (e.g. K15DS-18H, K19AA) cross-reference to BASO equivalents and may appear on equipment labels. We can cross-reference Johnson Controls part numbers to the correct BASO product — call us at (901) 458-2000.

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For emergencies, outside of business hours, call #901-604-7069