Product details
PRODUCT DESCRIPTION
The 4CTS-1 Series HVAC Pressure Gauges by Weiss Instruments are designed for accurate pressure measurement in HVAC systems, water lines, and industrial applications. These gauges are built with a rugged stainless steel case and precision brass internal components, ensuring durability and long-term reliability.
Featuring a lower connection design, the 4CTS-1 Series is easy to install and suitable for a wide range of system configurations. The large 4.5″ dial with clear black graduations provides excellent readability, even in demanding environments.
With ±1.0% accuracy (ASME B40.100 Grade 1A) and multiple pressure range options including vacuum, compound, and pressure ranges up to 600 psi, this series offers flexibility for various HVAC and plumbing applications.
KEY FEATURES
4.5″ large dial for clear visibility
Lower connection (1/4″ NPT)
Stainless steel case
Phosphor bronze tube
Lead-free brass socket
Precision brass movement (gear & pinion)
Adjustable slotted pointer
±1.0% accuracy (ASME Grade 1A)
UL certified (NSF/ANSI 372/61 compliant)
Suitable for HVAC, water, and industrial applications
TECHNICAL SPECIFICATIONS
| Specification | Details |
|---|---|
| Series | 4CTS-1 |
| Brand | Weiss Instruments |
| Type | Pressure Gauge |
| Dial Size | 4.5″ |
| Connection Type | Lower Mount |
| Connection Size | 1/4″ NPT |
| Case Material | Stainless Steel |
| Window | Lexan (push-in type) |
| Tube | Phosphor Bronze |
| Socket | Lead-Free Brass |
| Movement | Brass (gear & pinion) |
| Dial | White with black graduations |
| Pointer | Adjustable, slotted |
| Accuracy | ±1.0% (ASME B40.100 Grade 1A) |
| Process Temperature | -40°C to 85°C |
| Ambient Temperature | -40°C to 60°C |
| Certification | UL (NSF/ANSI 372/61) |
ITEM NUMBERS / MODELS
| Code | PSI Range | Type |
|---|---|---|
| 015 | 0–15 psi | Pressure |
| 030 | 0–30 psi | Pressure |
| 060 | 0–60 psi | Pressure |
| 100 | 0–100 psi | Pressure |
| 160 | 0–160 psi | Pressure |
| 200 | 0–200 psi | Pressure |
| 300 | 0–300 psi | Pressure |
| 400 | 0–400 psi | Pressure |
| 600 | 0–600 psi | Pressure |
| VAC | 30″ Hg / 0 | Vacuum |
| V15 | 30″ Hg / 15 psi | Compound |
| V30 | 30″ Hg / 30 psi | Compound |
| V60 | 30″ Hg / 60 psi | Compound |
| V100 | 30″ Hg / 100 psi | Compound |
| V150 | 30″ Hg / 150 psi | Compound |
| V200 | 30″ Hg / 200 psi | Compound |
| V300 | 30″ Hg / 300 psi | Compound |
APPLICATIONS
HVAC systems
Chilled & hot water systems
Pumps
Glycol systems
Plumbing systems
Boilers
FAQs
Q1: What is the accuracy of the 4CTS-1 pressure gauge?
A: The gauge offers ±1.0% accuracy as per ASME B40.100 Grade 1A standards.
Q2: What type of connection does this gauge use?
A: It features a 1/4″ NPT lower mount connection.
Q3: Can this gauge be used for potable water systems?
A: Yes, it uses a lead-free brass socket and is UL certified for potable water applications.
Q4: What pressure ranges are available?
A: It is available in multiple ranges from vacuum to 600 psi, including compound ranges.
Q5: Is this suitable for HVAC applications?
A: Yes, it is specifically designed for HVAC, plumbing, pumps, and boiler systems.







