LF441 Series 4" Liquid Filled Pressure Gauge | Lower Mount | Weiss Instruments

Product details PRODUCT DESCRIPTION The LF441 Series Liquid Filled Pressure Gauges by Weiss Instruments are designed for accurate and stable pressure measurement in demanding industrial environments. These gauges feature a glycerine-filled case that minimizes vibration, pulsation, and internal wear, ensuring smooth operation and extended service life. Built with a durable 304 stainless steel thin line case and a polished stainless steel ring, the LF441 Series provides excellent protection and a professional finish. The large 4″ dial with dual scale (psi & kPa) markings allows for clear and precise readings. With ±1.0% full scale accuracy (ASME B40.100 Grade 1A) and pressure ranges from vacuum to 10,000 psi, this series is ideal for compressors, pumps, hydraulic systems, and general industrial applications. KEY FEATURES 4″ large dial for easy readabilityGlycerine-filled for vibration resistance304 stainless steel thin line casePolished stainless steel ringDual scale (psi & kPa)Clear acrylic window±1.0% accuracy (ASME Grade 1A)1/4″ NPT lower connectionSuitable for industrial and outdoor applications TECHNICAL SPECIFICATIONS Specification Details Series LF441 Brand Weiss Instruments Type Liquid Filled Pressure Gauge Dial Size 4″ Connection Type Lower Mount Connection Size 1/4″ NPT Case Material 304 Stainless Steel Ring Crimped Polished Stainless Steel Window Clear Acrylic Fill Fluid Glycerine Tube Phosphor Bronze Socket Brass with threaded restrictor Movement Brass rotary type with bushings Dial White aluminum with black & red markings Pointer Black anodized aluminum Accuracy ±1.0% Full Scale (ASME B40.100 Grade 1A) Process Temperature -40°C to 60°C Ambient Temperature -40°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 serviceCompressors & pumpsHydraulic equipmentPlumbing & heating systemsOutdoor applications FAQs Q1: Why is glycerine used in this pressure gauge?A: Glycerine filling helps reduce vibration, pulsation, and internal wear, ensuring stable readings and longer lifespan. Q2: What is the accuracy of the LF441 Series?A: The gauge offers ±1.0% full scale accuracy as per ASME B40.100 Grade 1A. Q3: What type of connection does this gauge have?A: It features a 1/4″ NPT lower mount connection. Q4: What pressure ranges are available?A: It supports a wide range from vacuum to 10,000 psi, including compound ranges. Q5: Is this suitable for industrial use?A: Yes, it is designed for industrial, hydraulic, and outdoor applications. View More View Less