Product details
PRODUCT DESCRIPTION
The LF251 Series Liquid Filled Pressure Gauges by Weiss Instruments are designed for accurate and stable pressure measurement in demanding environments. These gauges feature a glycerine-filled case that helps reduce vibration, pulsation, and mechanical wear, ensuring longer service life and consistent performance.
Constructed with a durable 304 stainless steel case and a crimped polished stainless steel ring, the LF251 Series offers excellent protection in industrial and outdoor applications. The clear acrylic window and dual-scale dial (psi & kPa) provide easy readability.
Available in both lower and center back connection types, with pressure ranges from vacuum to 10,000 psi, this series is suitable for a wide range of applications including compressors, pumps, hydraulic systems, and plumbing installations.
KEY FEATURES
2.5″ compact dial size
Glycerine-filled for vibration resistance
304 stainless steel case
Polished stainless steel ring
Dual scale (psi & kPa)
Clear acrylic window
±1.6% accuracy
Available in lower and back mount connections
Suitable for high-pressure and industrial applications
TECHNICAL SPECIFICATIONS
| Specification | Details |
|---|---|
| Series | LF251 |
| Brand | Weiss Instruments |
| Type | Liquid Filled Pressure Gauge |
| Dial Size | 2.5″ |
| Connection Type | Lower / Center Back |
| Connection Size | 1/4″ NPT |
| Case Material | 304 Stainless Steel |
| Ring | Crimped Polished Stainless Steel |
| Window | Clear Acrylic |
| Fill Fluid | Glycerine |
| Tube | Phosphor Bronze (up to 6000 psi), 316 SS (up to 10,000 psi) |
| Socket | Brass with threaded restrictor |
| Movement | Brass |
| Dial | ABS, white with black & red markings |
| Pointer | Black anodized aluminum |
| Accuracy | ±1.6% of span |
| Process Temperature | -18°C to 60°C |
| Ambient Temperature | -18°C to 60°C |
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 |
| 1000 | 0–1000 psi | Pressure |
| 1500 | 0–1500 psi | Pressure |
| 2000 | 0–2000 psi | Pressure |
| 3000 | 0–3000 psi | Pressure |
| 5000 | 0–5000 psi | Pressure |
| 6000 | 0–6000 psi | Pressure |
| 10000 | 0–10,000 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
General service
Compressors & pumps
Hydraulic equipment
Plumbing & heating systems
Outdoor applications
FAQs
Q1: What is the purpose of glycerine filling in this gauge?
A: Glycerine filling reduces vibration, pulsation, and internal wear, improving accuracy and lifespan.
Q2: What connection types are available?
A: The LF251 Series is available in both lower mount and center back connection types.
Q3: What is the maximum pressure range available?
A: This series supports pressure ranges up to 10,000 psi.
Q4: Is this gauge suitable for outdoor use?
A: Yes, the stainless steel construction and liquid filling make it suitable for harsh and outdoor environments.
Q5: Does it support dual scale readings?
A: Yes, the dial includes both psi and kPa scales as standard.
