LF-5500 pages

LF-550 Series

‘Low Flow’ Pressure Reducing Regulator Piston Sensed for outlet control to 414bar / 6000psi
HANDLE

SCREW

BEARING
BONNET

ADJUSTING
SCREW
MAIN
SPRING

SENSOR
SENSOR
HOLDER

LOWER SPRING
REST

VALVE
CAGE

SPACER

SEAT
CONNECTOR

MAIN
VALVE

SEAT
NUT

INLET

OUTLET

*Assembly drawing for reference only. Refer to office for specific detail.

Designed with precision machined sensing elements to
allow fine pressure control on pressures up to 414bar.
Two piston sensors combined with two spring ranges,
provide 4 outlet control options with a combination of low
torque adjustment and excellent sensitivity. A self venting
design and optional ratio loaded actuator makes it an ideal
regulator for use with electro-pneumatic controllers for
automated pressure control.
APPLICATIONS:
• Test and calibration systems
• Aircraft charging carts
• Diving applications
• Automated pressure cycling
• Gas assisted plastic injection systems
FEATURES:
690bar / 10000psi inlet pressure
Precision machined sensing elements
Load bearings and large handwheel for low torque
adjustment
Excellent sensitivity
Self venting and non venting options

STANDARD MATERIALS OF CONSTRUCTION
Regulator part

Material

Body and Bonnet

316SS

Main valve pin

316SS

Seat

PEEK

Valve spring

Inconel X750

Sensor and Holder

316SS

Handwheel

Nylon

Valve Cage and Seat Nut

316SS

Spring rests

316SS

‘O’ ring seals

NBR, Viton or EPDM

Adjusting screw

Ali Bronze

Loading Spring

Spring Steel

Lubricant

Krytox GPL 205

NOTE: Product availability and specifications contained herein are subject to change without notice. Consult local distributor or factory for potential revisions and/or service related issues.

PRESSURE TECH LTD, Unit 6, Graphite Way, Hadfield, Glossop, Derbyshire SK13 1QG
Tel: +44 (0)1457 899307 Fax: +44 (0)1457 899308
e-mail: info@pressure-tech.com

reg nº: 10049401

// pg 1 of 2

www.pressure-tech.com
Designed and built in the UK