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LPHF Series Assist Gas Regulator

USD $1,193.32

LPHF Series Assist Gas Regulator

USD $1,193.32
Part Number:    SEQLPHF Series
   Availability:   Ships within 24 hours from Montgomeryville, PA

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Product Description

MATHESON made in the USA



The LPHF Series Assist Gas Regulators deliver high pressure and high flow of inert gases. The key to the performance of this regulator is the servo-dome load technology. The servo-dome load feature allows the regulator to supply high flow rates with straight line pressure regulation. The LPHF series is constructed of brass barstock, with PTFE seats and seals. The maximum inlet pressure is 3000 psig.


• 250, 500 & 1000 PSIG delivery pressure
• Fast on/off response, even at high flow
• 3000 psig inlet pressure 
• Tamper proof, self-reseating internal safety valve 
• One piece encapsulated seat design with 10 micron filtration
• 1/2” NPT female outlet
• Conforms to CGA E-4 standard for gas pressure regulators

Ordering Information  
Part Number* Max
Delivery Pressure
Delivery Pressure
Cylinder Pressure

SEQLPHF250CGA 250 psi 0-500 psi 0-4000 psi 0.55
SEQLPHF500CGA 500 psi 0-600 psi 0-4000 psi 0.55
SEQLPHF1000CGA 1000 psi 0-2000 psi 0-6000 psi 0.4

*Note: where CGA is replaced by the actual CGA number. Some CGA limitations may apply. (NI) for 1/2" FNPT inlet

Materials of Construction

• Gauges: Chrome plated brass
• Body: Brass barstock
• Bonnets: Brass barstock
• Diaphragms: Teflon coated nylon reinforced neoprene
• Seat: PTFE Teflon
• Seal: PTFE Teflon 


• Maximum Flow Rate: 6000 scfh Air LPHF series (inlet > 400 psig)
• Pressure Regulation: 0.3 psi/100 psi for 500 psig delivery (0.5 psi/100 psi for 1000 psig delivery)

  Mounting Options
  LPHF-WMBR Mounting Bracket for Assist Gas Regulators
Mounting Nut is also needed (see below).
The regulator knob will have to be removed in order to mount on this bracket.
  LPHF-PMN Mounting Nut
This nut can be used either with the above bracket or for mounting in a panel.
  53 Series Protocol Station
This brass manifold is designed to provide a safe, reliable way of wall-mounting a cylinder regulator. Manifolds are provided a durable stainless steel bracket, stainless steel flex hose (3 ft std.), and a CGA connection with integral check valve.


Flow Curves

Flow Curves, LPHF Series


Instructions, General Regulator

3D Model


Warranty Information