PFQ STAINLESS STEEL LIQUID FILLED PRESSURE GAUGE / PFQ-LF LEAD FREE SS LIQUID FILLED PRESSURE GAUGE

Overview

DESCRIPTION & FEATURES

• Pulsation-resistant design with a liquid-filled stainless steel case for durability.
• Standard glycerin fill for smooth operation and extended lifespan.
• Available with brass, lead-free brass, or stainless steel internals to suit various applications.
• Restricted orifice (standard on dual scale) for added protection.
• Ventable plug on 2.5″ (63mm) and 4″ (100mm) bottom mount (excluding SAE connection).
• Crimp-on bezel for secure construction.
• Single (psi) or dual scale (psi/kPa)/(psi/bar) options available.
• Optional U-Clamps and front flanges for flexible mounting.
• Dry case available for specific requirements.
• ASME B40.100 & RoHS compliant (stainless steel internals only).
• CRN registered for certified quality.
• Lead-free version NSF-61-372 certified, suitable for potable water applications.
• 5-year warranty for long-term reliability.

Applications

• Ideal for use in harsh environments, including pumps, compressors, hydraulic presses, machinery, pneumatic equipment, and motors.

SPECIFICATIONS

Dial	1.5" (40mm), 2" (50mm), 2.5" (63mm), 4" (100mm), white aluminum with black and red markings
Case	AISI 304 SS
Lens	Polycarbonate
Ring	AISI 304 SS, Crimp-On
Socket	PFQ: OT 58 brass with restricted orifice (dual scale only) or AISI 316 SS with restrictor screw (dual scale only) PFQ-LF: Lead free brass with restricted orifice (dual scale only), NSF-61-372 certified
Connection	1/8”, 1/4” or 1/2” NPT standard with restricted orifice
Fill Liquid	Glycerin
Bourdon Tube	1.5” (40mm), 2" (50mm): Phosphor bronze C or coil shaped for brass socket SS C or coil shaped for 316 SS socket 2.5” (63mm), 4” (100mm): Phosphor bronze C or coil shaped, AISI 316 SS C or coil shaped for 316 SS socket
Movement	PFQ: OT 59 brass or SS PFQ-LF: Lead free brass, NSF-61-372 certified
Pointer	Aluminum, anodized black
Welding	Brass: Silver alloy, 316SS: TIG
Over-pressure Limit	25% for pressures up to 1,450 psi (9,998 kPa) 15% for pressures over 1,450 psi (9,998 kPa)
Socket Material	Buna N for two-piece internal socket seal
Fill Plug	Buna N
Lens Ring Gasket	Silicone rubber
Working Pressure	Maximum 75% of full scale value
Ambient/Process Temperature	Dry: -40°F to 200°F (-40°C to 93°C) Glycerin Filled: -4°F to 150°F (-20°C to 65°C)
Accuracy	1.5” (40mm), 2" (50mm): ±2.5% of full scale 2.5” (63mm), 4” (100mm): ±1.5% of full scale value
Enclosure Rating	IP65
Warning (brass and lead free brass internals only)	Warning: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm.  For more information go to www.P65Warnings.ca.gov.