Instrumentation
H.B.S Trading LTD.
Pressure Regulators
Low Flow Pressure Regulator JPR/JHR Low Flow Pressure Regulator JHP
The JPR and JHR pressure reducing  The JHP is designed for gases and 
regulators are designed for gas or  liquids with inlet pressure to 3600 psig 
liquid service and with inlet pressures  Standard adjustable outlet ranges 
up to 3600 psi (248 bar). Standard from 50 - 1500 psig. Flow coefficient 
adjuststable outlet ranges are from  of 0.06. This general purpose use 
1 - 10 psig (0,07 -0,69 Barg) thru  regulator can be ordered with a 
10 - 750 psig (0,69 - 51,7 Barg). The variety of options to meet your 
JPR/JHR Series can be manufactured  system demands.
from various barstock materials Panel or surface mounting
Low Flow Back Pressure Regulator JBP Cylinder Pressure Regulators JCYL/JCYL-2
The JBP back pressure regulator is  The JCYL Cylinder Pressure Regulator 
designed for gas or liquid service up  and JYCL-2 Two Stage Cylinder 
to 750 psig. Flow coefficients are  Pressure Regulator are designed
available in 0.10, 0.20 and 0.30. The for gas or liquid service with inlet 
back pressure regulator controls the  pressures up to 3600psig. Standard 
inlet pressure. It is used to maintain a  adjustment outlet ranges from
pressure in a process, or act in a 1 - 10 psig thru 10 - 750 psig .
relief valve capacity. It can be  The JCYL is designed to handle
manufactured in a variety materials. Line Sizes: Standard — 1/4" (DN8)
Flow Regulators Mark 130 Self-Operated Back Pressure Regulators
1/4" through 2" (DN8 through DN50) Mark 50
The Mark 130 is a flow regulator that  1/4” & 3/8” sizes use 1/2” body 
will maintain a constant downstream  The Mark 50 is used to regulate 
flow rate regardless of inlet or outlet upstream pressure at a predetermined
pressure fluctuations. setpoint. The spring in the Mark 50 
1/4"NPT 0.1-1 GPM & 0.05 - 0.5 GPM holds the sliding gate seats in their 
1/2"NPT 1 to 10 GPM & 0.5 to 5.0 GPM normally closed position.
3/4"NPT 2-20 GPM; 1" NPT 3-30 GPM high pressure setpoints up to 450 psi 
1-1/2"NPT 7-70GPM; 2"NPT 8-90 GPM (31,03 bar)
GAS BACK PRESSURE REGULATOR MK508 Differential Back Pressure Regulators Mark 53/54
Line Sizes: 1-1/2” (DN40), 2” (DN50) 1/4”(DN8)&3/8”(DN12)use 1/2”(DN15)
The MK508 vents gas from the tank to  The Mark 53 maintains a constant 
prevent blanketing pressure from  differential between the inlet pressure 
rising to a level that could damage the  and the pressure loaded on top of the 
tank. Inlet pressures up to 25 psi . diaphragm.
Rugged, heavy-duty design —  Straight-through flow for reduced 
emergency outlet pressure may  turbulence and quiet operation;
reach 100% of inlet pressure without  Short stroke for fast response and 
damaging valve accurate regulation.
Vacuum Regulators   Mark 55 Air Loaded Back Pressure Regulators Mark 56
1/2” (DN15) through 2” (DN50) 1/2” through 6”(DN15 through DN150)
Vacuum Control Ranges:  The operation of the MK56 requires 
1” Hg to 25” Hg vacuum. no control spring or pilot. Instead, a 
They are used to maintain vacuums  static air signal is applied to the top of
at predetermined settings and to  the diaphragm to determine the 
regulate vacuums on evaporators,  setpoint.
cookers,grinding fixtures, milking  Max ∆P  325 PCI -- 2" DN50
machines, altitude chambers and  Max ∆P  150 PCI -- 6" DN50
other vacuum systems. Max ∆P  550 PCI -- 1/2" DN50
Externally Piloted Back Pressure Regulators Cage Trim Back Pressure Regulators Mark 58
Mark 57 1/4" through 2" (DN8 through DN50)
The inlet pressure passes through the  Maximum Inlet Pressure: 300 psi .
inlet pilot tubing beneath the pilot  Maximum Temperatures:350°F  with 
diaphragm. When the setpoint is Viton seats and Viton or SST
reached, the force of the adjusting  diaphragm.
spring is overcome and the pilot valve  Minimum Temperatures: -20°F (-29°C) 
opens. with Buna-N seats and diaphragm
1/2” (DN15) through 6” (DN150) ANSI Flanges — 150#, 300#
Max ∆P  325 PCI -- 6" DN50 DIN Flanges — PN10/16, PN25/40