Thermo Valves | K-Valves, H-Valves, Manifolds,... | Scuba Center has been selling quality scuba diving and snorkeling equipment since 1973. You will find a wide selection of scuba and snorkeling equipment at both our Minneapolis and Eagan, Minnesota locations.

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Thermo Valves, Manifolds, and Cylinder Hardware
Thermo Valves | Thermo Valves is active in the Compressed Gas Association (CGA), International Standards Organization (ISO), ASTM and other national and international standards organizations.Thermo Valves was founded in 1972 as a manufacturer of compressed gas cylinder valves and adaptors to a wide variety of international standards. Acquired in 1988 by Hamai Industries Limited (manufacturing cylinder valves for over 80 years), Thermo now specializes in specialty gas valves, semiconductor valves, scuba valves and post type medical handwheels. Thermo's mission is to supply state of the art equipment with a focus on safety and innovation.

The Thermo Stand Alone series is designed with an angled handwheel and a shielded side safety assembly to make the lifting of your cylinder easier. From the reliable Thermo K valve and Thermo PRO valve to the Thermo DIN series, there is a stand alone valve designed for your diving pleasure.

All Thermo scuba valves are triple bright chrome plated for maximum protection and long lasting beauty in salt water environments. The new Easy Grip handwheel is made from soft rubber formed around a durable stainless steel insert. The stainless steel insert insures positive long lasting life. The large soft rubber ribs make it easy to open or close the valve even while wearing dive gloves.

All Thermo scuba valves come with a one piece safety plug assembly which eliminates the possibility of mismatched components and can be used on all prior versions of Thermo scuba valves. This greatly reduces the likelihood of accidental "double disking" of the safety assembly and protects the integrity of your diving cylinder. The safety device is shielded by the valve body to avoid damage during transportation or while diving.

All Thermo scuba valves come with a high pressure plug & seat assembly manufactured from a high tensile brass alloy and the threaded area is coated with Teflon. Both the high tensile brass and the Teflon coating insure a lube less, smooth operation and prolongs the life of your valve! During the manufacturing process every valve is pressure tested under high pressure to test for leaks and ease of operation at operating pressures.

Scuba Center is an authorized Thermo Dealer.
This is your assurance that your equipment will come with the full manufacturer's warranty.

Thermo Deluxe K Valves  

5251 Thermo Stand Alone K Valve |

Stand Alone Thermo K Scuba Valve with Angled Handwheel and Shielded Side Safety Assembly. 3/4" - 14 NPSM inlet, Air Service only.

Price: $49.95

2400 psi or 3000 psi

Thermo Pro Valves (DIN / K)

Thermo Stand Alone Pro Valve |

Stand Alone Thermo PRO Scuba Valve with Angled Handwheel and Shielded Side Safety Assembly. Standard Yoke outlet with removable insert adapter, converts to 230 BAR DIN outlet. 3/4" - 14 NPSM inlet, EAN Ready

Price: $55.00

2400 psi, 3000 psi, 3300 psi, or 3442 psi

Thermo Modular Valves (DIN / K)

Thermo Modular Pro Valve |
200 BAR

The Thermo 200 BAR Modular series of valves can be combined into a variety of configurations and are often used by the technical diver. With a modular valve, the diver can dive with a single cylinder or the valves can be combined into a manifold configuration to dive with two cylinders for extended down time. Another alternative is to add the 9020 type H connector valve to the modular series so that the diver has a single cylinder with two valve outlets. If maximum flexibility is what you desire, the Thermo Modular series can be configured for your diving needs. Standard Yoke outlet with removable insert adapter, converts to 230 BAR DIN outlet. 3/4" - 14 NPSM inlet, EAN Ready Right Hand
Thermo Modular Valve | Right Hand
Left hand
Thermo Modular Valve | Left Hand

Price: $90.00

2400 psi, 3000 psi, or 3442 psi


Thermo H Valve Adapters (200 BAR DIN / K)

The Thermo H connectors will attach to a modular cylinder valve and will result in an additional outlet on a single valve. The 9020 series of H connectors have a Thermo PRO type outlet for pressures up to 230 Bar. Standard Yoke outlet with removable insert adapter, converts to DIN outlet.

Thermo 200 BAR H-Valve Adapter, 9020RH | Add the Thermo 9020 type H connector valve to the modular series so that the diver has a single cylinder with two valve outlets. Thermo 200 BAR H-Valve Adapter, 9020RH
(Connects to RH modular valve) EAN Ready

Price: $90.00   add Thermo 200 BAR H-Valve Adapter, 9020RH to cart

Thermo 200 BAR H-Valve Adapter, 9020LH | Add the Thermo 9020 type H connector valve to the modular series so that the diver has a single cylinder with two valve outlets. Thermo 200 BAR H-Valve Adapter, 9020LH
(Connects to LH modular valve) EAN Ready

Price: $90.00   add Thermo 200 BAR H-Valve Adapter, 9020LH to cart

Thermo Manifolds

Thermo 200 BAR Isolation Manifold | If you wish to dive with two cylinders manifolded together, you will also need a center bar to connect the two valves. There are two center bars available depending on which size cylinders you wish to manifold. The 8003 CTR W VLV center bar comes with a center isolator valve and when attached to two modular valves will separate the cylinders by 215 mm from center to center. This center bar is used for most cylinders. Also available is the 8004 CTR BAR without a center isolator valve and when attached to two modular valves will separate the cylinders by 185 mm from center to center. This is usually used to manifold two 40 cubic foot cylinders together.
Thermo Center Bar with Isolator Valve, 8003 Thermo Manifold Center Bar with Isolator Valve, 8003
EAN Ready
Price: $90.00   add Thermo Manifold Center Bar with Isolator Valve, 8003 to cart
Thermo Center Bar, 8004 Thermo Manifold Center Bar, 8004
EAN Ready
Price: $50.00   add Thermo Manifold Center Bar, 8004 to cart

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While these are excellent reference materials, in no way should this information be considered a replacement for proper training for the specific type of diving in which you plan to participate.