When you think of a spa, images of relaxation, warmth, and comfort often come to mind. Central to the spa experience is the soothing temperature of the water, which must be carefully controlled to ensure that it remains at the desired level of comfort. Capillary thermostats are crucial components in spa systems, helping maintain the perfect water temperature and ensuring the safety, energy efficiency, and overall satisfaction of spa-goers. To view STEMCO’s line of capillary thermostats, click here.

What is a Capillary Thermostat? 358W-136 Capillary Thermostat

A capillary thermostat is a temperature control device that relies on a temperature-sensitive fluid enclosed within a flexible capillary tube. The working principle is simple yet highly effective: as the temperature of the fluid changes, it expands or contracts, thereby causing mechanical movement within the thermostat. This movement, in turn, triggers the thermostat to open or close an electrical circuit.

In the context of spa systems, capillary thermostats are used to control the temperature of the spa water, ensuring it remains at the ideal comfort level. Let’s explore how capillary thermostats are employed in spa systems:

1. Temperature Regulation

One of the primary functions of capillary thermostats in spa systems is to regulate the water temperature. Users can set their preferred water temperature, and the thermostat continuously monitors the water’s temperature, turning the spa’s heating element on or off as needed to maintain the desired warmth. This level of precision ensures that spa-goers enjoy a consistently comfortable experience.

2. Safety First

Safety is paramount in spa systems, and capillary thermostats play a significant role in this regard. They can be configured to cut off power to the heating element if the water temperature rises to potentially dangerous levels. This critical safety feature helps prevent scalding and ensures that the spa water remains safe for use.

3. Energy Efficiency Spa capillary thermostat

In an age when energy efficiency is a growing concern, capillary thermostats offer a solution for spa systems. By controlling the heating element based on the desired temperature, they help conserve energy. The heating element operates only when necessary, reducing operational costs and making spa ownership more eco-friendly.

4. User Comfort

Spas are all about providing a tranquil and enjoyable experience for users. Capillary thermostats contribute to this by allowing individuals to set and maintain their preferred water temperature. With these thermostats, spa-goers can relax and unwind in a spa that perfectly suits their comfort preferences.

5. Equipment Protection

The longevity of spa equipment is essential for spa owners and operators. Capillary thermostats safeguard the spa’s heating system and its components by preventing overheating. This protection not only extends the lifespan of the equipment but also reduces maintenance costs and downtime.

In summary, capillary thermostats quietly assume a crucial role within spa systems. They diligently maintain the water temperature at optimal levels, elevating the entire spa experience while giving top priority to safety, energy efficiency, and the protection of spa equipment. These ingenious devices enable spa enthusiasts to submerge themselves in the tranquil spa waters, where luxurious comfort and relaxation seamlessly integrate with state-of-the-art technology. Whether you’re indulging in a spa resort’s lavish amenities or enjoying your personal backyard retreat, capillary thermostats stand as indispensable elements in crafting the flawless spa experience.

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Bulb & Capillary Thermostats

Original equipment manufacturers worldwide use thermostat switches designed and manufactured by STEMCO, a Division of Senasys. No matter which style or model you choose, all of the capillary thermostat switches operate using the same physics. A fluid is encapsulated in a metal and when the temperature changes the fluid either expands or contracts. This fluid change moves a diaphragm which is in touch with a snap action switch and either opens or closes a circuit.

Ambient Compensation

Our capillary thermostats can be ambient compensated to offset the differential in temperature which keeps our thermostat controls more accurate as it’s environment changes.

Custom Options

Capillary thermostat switches built by Senasys can also be built to customer specifications. This insures you get the exact control you want without paying for features you don’t need.