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Available Now:  1   Matheson Model 18L Single Stage General Purpose Brass Regulator, CGA-510, Delivery Pressure Range 4-100 PSIG, SEQ18L510 338.35

Sale: $338.35



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Matheson Model 18L Single Stage General Purpose Brass Regulator, CGA-510, Delivery Pressure Range 4-100 PSIG, SEQ18L510

Matheson Model 18L Single Stage General Purpose Brass Regulator
SEQ18L, CGA-510

A CGA fitting is the standardized system for the attachment of a compressed gas cylinder to the required regulator or transfer line. The three digit number, CGA (XXX), corresponds to specific gasses which that fitting is tailored for. See CGA Connection Chart.pdf in the downloads section for specific gas types compatible with this Nickel Plated Brass CGA-510 fitting.

Regulator Specifications
  • Maximum Inlet Pressure: 3000 psig (20,700 kPa)
  • Maximum Flow Rate: 4000 CFH (1890 LPM)(At 2000 psig, N2)
  • Flow Capacity (Cv): 0.17 (without outlet valve)
  • Operating Temperature: -20F to 140F (-29C to 60C)
  • Porting (Regulator Body): 1/4 NPT Female
  • Porting Configuration: 2 High, 2 Low
  • Delivery Pressure Range: 4-100 PSIG
  • Delivery Pressure Gauge: 0-150 PSIG
  • Cylinder Pressure Gauge: 0-4000 PSIG

This is a Matheson Single Stage Brass regulator with a 1/4 in MNPT outlet connection (with loose 1/4 in hose barb) and 1/4 in FNPT body porting. It comes equipped with 2 inch inlet and delivery pressure gauges, outlet needle valve, Neoprene seals, chrome plated brass bonnet, and a PTFE Teflon seat.

This Matheson series 18, model 18L regulator is to be used in applications requiring delivery pressures up to 100 PSIG and can accept a maximum inlet pressure of 3000 PSIG. This regulator is suitable for a variety of applications that require gasses that are 99.995% or lower purity. This regulator is not suitable for any application requiring the supply of corrosive gas (non-corrosive gas applications only).

Single-Stage vs. Two-Stage

Both single-stage and two-stage regulators operate by reducing the pressure of gas supplied by a cylinder to an appropriate output level. The intake and delivery pressure ranges of regulators do not depend on how many stages they have, but by each regulators mechanical characteristics. When considering a single vs. a two-stage regulator there are two things to keep in mind: Droop and Supply Pressure Effect. Droop is the decrease in output pressure caused by an increase in flow rate. Supply Pressure Effect is simply the variation in delivery pressure from the cylinder to the regulator.

Single Stage regulators will experience less droop with varying flow rates but a large supply pressure effect and need to be monitored and adjusted by an operator or used in applications where supply pressure will remain constant. Two-Stage regulators inherently control for variations in supply pressure while producing a constant output and therefore can be used without an operator present and in applications which require a very specific delivery pressure. The specification sheet for this series of regulator can be found in the downloadable section as a .PDF.

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Ideal Vacuum Products, LLC
5910 Midway Park Blvd NE,
Albuquerque, NM 87109-5805

Phone: (505) 872-0037
Fax: (505) 872-9001

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