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CVS Controls Ltd. 627R Instruction Manual

Pressure regulator
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CVS Controls Series 627
Pressure Regulator
The CVS Series 627 regulator is a high and
low pressure, direct operated pressure
reducing regulator. Suitable for use in many
applications, including air, natural gas and
other fuel gas sources.
CVS Series 627 Regulators are easy to
maintain, reducing cost of ownership and
valuable downtime. Internal components
may be replaced without the need to
remove the regulator from the applications
installation. The two bolt design between
the body and diaphragm case allows for
simple removal to do maintenance or
repairs.
The diaphragm case and or the regulator
body may be rotated in any of four
positions to allow for versatile installation
options.
The adjustment set screw and lock nut
come standard with a protective cap to
discourage unwanted adjustments of the
desired pressure output.
Head Office
3900 101 Street
Edmonton, Alberta
T6E 0A5
Canada
Office: (780) 437-3055
Fax: (780) 436-5461
Website:
www.cvs-controls.com
INSTRUCTION MANUAL
Three configurations available:
CVS 627 - Direct Operated Pressure
Reducing
CVS627R – Internal relief
CVS627H – High Pressure
All are sour or NACE capable.
Email:
info@cvs-controls.com
Calgary Sales Office
3516 114 Avenue SE
Calgary, Alberta
T2Z 3V6
Canada
Office: (403) 250-1416
Fax: (403) 291-9487

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Summary of Contents for CVS Controls Ltd. 627R

  • Page 1 INSTRUCTION MANUAL CVS Controls Series 627 Pressure Regulator The CVS Series 627 regulator is a high and low pressure, direct operated pressure reducing regulator. Suitable for use in many applications, including air, natural gas and other fuel gas sources. CVS Series 627 Regulators are easy to maintain, reducing cost of ownership and valuable downtime.

  • Page 2: Specifications

    Construction Materials: Specifications: Body Size Standard Body: (in) Connection Construction Ductile Steel Standard 1 and 2 LCC Steel LCC- Optional for Sour or NACE service. Note: The pressure limits specified in this manual should not be exceeded Spring Case and Diaphragm Case: LCC Steel Maximum Inlet Pressure (body) NPT Steel: 2000 psig...

  • Page 3: Installation

    Installation: Note: Do not exceed the pressure and temperature limits referenced in this manual. Ensure proper safety procedures are followed when installing or maintenance is required. Only qualified personnel should install, operate and maintain this component. 1. If the CVS 627 regulator has been shipped as an individual component, inspect for debris or foreign materials upon un-packaging.

  • Page 4: Startup And Adjustments

    Startup and Adjustments: The CVS Series 627 Regulator is set to the midpoint of the spring range upon assembly, unless otherwise specified by the customer. Initial adjustments may be required at point of installation to suit the application. During startup, release downstream pressure to prevent an overpressure condition. It is recommended pressure gauges be utilized to monitor pressures during startup.

  • Page 5: Shutdown And Maintenance

    Shutdown and Maintenance: Shutdown: Avoid an overpressure condition on the regulator by first releasing downstream pressure to avoid equipment damage or personal injury. 1. Close upstream shut off valve. 2. Close downstream shut off valve. 3. Vent line between the regulator installation and the closest downstream shut off valve. 4.

  • Page 6: Body Maintenance

    Body Maintenance: *The following procedures refer to the CVS 627H, for CVS 627 and CVS 627R refer to assembly drawings for correct item identification. The following procedures may be used to access the disk assembly, orifice, stem assembly and diaphragm casing o-ring. Ensure all pressure has been released from the diaphragm casing prior to performing the following procedures.
  • Page 7 Maintenance: Stem Assembly Replacement, continued: 3. Apply an o-ring lubricant to the diaphragm casing o-ring (key 9) prior to assembly. 4. When re-assembling, the pitot tube tab must be on the inside of the outlet side of the regulator body. 5.
  • Page 8 Maintenance: Spring Case and Diaphragm Maintenance: The following procedures may be used to inspect and maintain the Diaphragm Assembly (key 28), Main Control Spring (key 34), and Lever Assembly (key 22). Remove spring pressure from the diaphragm case prior to performing the procedures. 1.
  • Page 9 Maintenance: Diaphragm area maintenance continued: 1. The Lever Assembly (key 22) may be removed by using a 7/16 nut driver or similar if inspection reveals damage or wear. A new Lever (key 22) may be installed by first removing the Pin (key 21) to remove the old Lever, then install a new Lever and insert the Pin.
  • Page 10 Maintenance: Diaphragm Area Maintenance Reassembly: 1. The Diaphragm Limiter and Diaphragm Limiter o-ring may now be installed. Set the Diaphragm Limiter onto the Diaphragm; align so that the Spring Case Cap Screws may be installed. Set the Diaphragm Limiter o-ring back into the groove. 2.
  • Page 11 Dimensions 11 | P a g e...
  • Page 12 Assembly CVS 627H – Parts Listing Item PART NUMBER DESCRIPTION QTY. Number ADJUSTING SCREW CVS 10B3081X012 LOCK NUT CVS 1D667728982 SPRING CASE CVS 30B3102X012 UPPER SPRING SEAT CVS 1D667125072 DIAPHRAGM CASE CVS 30B3104X012 BODY CVS 30B3051X012 DIAPHRAGM LIMITER CVS 22B0176X012 STEM GUIDE CVS 20B3061X012 DIAPHRAGM CASE O-RING 221...
  • Page 13 Assembly – CVS 627H CVS 627H Assembly 13 | P a g e...
  • Page 14 Assembly CVS 627R – Parts Listing Item PART NUMBER DESCRIPTION QTY. Number CVS 10B3081X012 ADJUSTING SCREW CVS 1D667728982 LOCK NUT CVS 40B3086X012 SPRING CASE UPPER SPRING SEAT CVS 1D667125072 CVS 40B3084X012 DIAPHRAGM CASE CVS 30B3048X012 BODY-627H 1``NPT 1000psig CVS 10B3068X012...
  • Page 15 Assembly – CVS 627R CVS 627R Assembly 15 | P a g e...
  • Page 16 Assembly CVS 627 – Parts Listing Item PART NUMBER DESCRIPTION QTY. Number CVS 10B3081X012 ADJUSTING SCREW CVS 1D667728982 LOCK NUT CVS 10B3078X012 CONTROL SPRING LOWER SPRING SEAT 627 CVS 1D666625072 CVS 1K920724052 DIAPHRAGM HEAD CAP SCREW ¼-20 X .63 LONG CVS 40B3086X012 SPRING CASE CVS 1A953228982...
  • Page 17 Assembly – CVS 627 CVS 627 Assembly 17 | P a g e...

  • Page 18: Technical Data

    13.8 3/32 2000 1000 15-40psig 1500 1000 (1-2.8bar) 3/16 1000 1000 Green 51.7 51.7 20.7 20.7 10B3077X012 13.8 13.8 CVS 627R 3/32 2000 1000 35-80psig 1750 1000 (2.4-5.5bar) 3/16 1000 1000 Blue 51.7 51.7 20.7 20.7 10B3078X012 13.8 13.8 3/32...
  • Page 19 Technical Data Table 1: Maximum Inlet Pressures and Outlet Pressure Range Outlet Pressure Maximum Inlet Pressure Orifice Size Range, Model Color Code, Spring Part Number Nylon Disk (PA) Nitrile Disk (NBR) Inches Psig Psig 3/32 2000 1000 *5-20psig 1000 1000 (.34-1.4bar) 3/16 51.7...
  • Page 20 Table 2: Spring and Diaphragm Casing Pressure CVS 627R CVS 627 CVS 627H Maximum Pressure Condition Diaphragm Casing Material Psig Psig Psig Maximum pressure to diaphragm Die Cast Aluminum casing to prevent leak to Ductile Iron 17.2 17.2 atmosphere. Steel or Stainless Steel 55.2...
  • Page 21 Technical Data Table 3: Regulator Capacities for CVS 627H, 1 Inch NPS Capacities – SCFH (Nm /h) of 0.6 Specific Gravity Natural Gas Outlet Pressure (based on 20% droop) Outlet Range, Inlet Pressure Color Code, Pressure Setting Orifice Size In (mm) Spring Part psig (bar) psig (bar)
  • Page 22 Technical Data Table 3 continued: Regulator Capacities for CVS 627H, 1 Inch NPS Capacities – SCFH (Nm /h) of 0.6 Specific Gravity Natural Gas Outlet Pressure (based on 20% droop) Outlet Range, Inlet Pressure Color Code, Pressure Setting Orifice Size In (mm) Spring Part psig (bar) psig (bar)
  • Page 23 Technical Data Table 3: Regulator Capacities for CVS 627H, 2 Inch NPS Capacities – SCFH (Nm /h) of 0.6 Specific Gravity Natural Gas Outlet Pressure (based on 20% droop) Outlet Range, Inlet Pressure Color Code, Pressure Setting Orifice Size In (mm) Spring Part psig (bar) psig (bar)
  • Page 24 Technical Data Table 3: Regulator Capacities for CVS 627H, 2 Inch NPS Capacities – SCFH (Nm /h) of 0.6 Specific Gravity Natural Gas Outlet Pressure (based on 20% droop) Outlet Range, Inlet Pressure Color Code, Pressure Setting Orifice Size In (mm) Spring Part psig (bar) psig (bar)
  • Page 25 Technical Data Table 3: Regulator Capacities for CVS 627R, 1 and 2 Inch NPS Capacities – SCFH (Nm /h) of 0.6 Specific Gravity Natural Gas Outlet Pressure (based on 20% droop) Outlet Range, Inlet Pressure Color Code, Pressure Setting Orifice Size In (mm)
  • Page 26 Technical Data Table 3: Regulator Capacities for CVS 627R, 1 and 2 Inch NPS Capacities – SCFH (Nm /h) of 0.6 Specific Gravity Natural Gas Outlet Pressure Outlet (based on 20% droop) Range, Inlet Pressure Color Code, Pressure Setting Orifice Size In (mm)
  • Page 27 Technical Data Table 3: Regulator Capacities for CVS 627, 1 Inch NPS Capacities – SCFH (Nm /h) of 0.6 Specific Gravity Natural Gas Outlet Pressure Outlet (based on 20% droop) Range, Inlet Pressure Color Code, Pressure Setting Orifice Size In (mm) Spring Part psig (bar) psig (bar)
  • Page 28 Technical Data Table 3: Regulator Capacities for CVS 627, 1 Inch NPS Capacities – SCFH (Nm /h) of 0.6 Specific Gravity Natural Gas Outlet Pressure Outlet (based on 20% droop) Range, Inlet Pressure Color Code, Pressure Setting Orifice Size In (mm) Spring Part psig (bar) psig (bar)
  • Page 29 Technical Data Table 3: Regulator Capacities for CVS 627, 2 Inch NPS Capacities – SCFH (Nm /h) of 0.6 Specific Gravity Natural Gas Outlet Pressure Outlet (based on 20% droop) Range, Inlet Pressure Color Code, Pressure Setting Orifice Size In (mm) Spring Part psig (bar) psig (bar)
  • Page 30 Technical Data Table 3: Regulator Capacities for CVS 627, 2 Inch NPS Capacities – SCFH (Nm /h) of 0.6 Specific Gravity Natural Gas Outlet Pressure Outlet (based on 20% droop) Range, Inlet Pressure Color Code, Pressure Setting Orifice Size In (mm) Spring Part psig (bar) psig (bar)
  • Page 31 Diaphragm Head Screw CVS 627H Diaphragm Head Screw CVS 627 Guide Retainer (CVS 627R only) Refer to page 12 through 17 for assembly drawing and item number reference CVS Controls Ltd. strives for the highest levels of quality and accuracy. The information included in this publication is presented for informational purposes only.
  • Page 32 Calgary Sales Office Head Office 3516 114 Avenue SE 3900 101 Street Calgary, Alberta Edmonton, Alberta T2Z 3V6 T6E 0A5 Canada Canada Office: (403) 250-1416 Office: (780) 437-3055 Fax: (403) 291-9487 Fax: (780) 436 5461 Website: www.cvs-controls.com Email: info@cvs-controls.com 32 | P a g e Feb 2019...

This manual is also suitable for:

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