DESIGN FEATURES :

• Operates automatically off line pressure.
• Heavy-duty, nylon-reinforced diaphragm.
• Round-shaped, soft seat seal provides drip-tight class VI closure.
• Diaphragm assembly guided top and bottom.
• Throttling seat retainer for flow and pressure stability.
• Easily maintained without removal from the line.
• Pressure adjustment by single adjusting screw.
• Replaceable seat ring.
• Range of body & diaphragm material combinations to meet majority of requirements.
• IBR certification in Form III C available.
• Designed ruggedly to withstand shocks.
• Simple and economic design.

QUALITY AND PERFORMANCE GUARANTEE :

• Produced with Quality Systems accredited to ISO 9001: 2008 by Bureau Veritas.
• Full material certification available for all major component Parts.
• Full guarantee on design and Performance.
• All testing performed to the requirements of ANSI B16.34.

VALVE SIZING CO-EFFICIENT Cv RATING. (Table 1)

REGULATOR vs. CONTROL VALVE WITH INSTRUMENTION (Table 2)

GUIDELINES ON OPERATION & INSTALATION :

• All regulators should be installed and used in accordance with applicable standard and localcodes and regulations.
• Adequate overpressure protection should be installed to protect the regulator from overpressure. Adequate overpressure protection should also be installed to protect all downstream equipment in the event of regulator failure.
• Downstream pressures significantly higher than the regulator's pressure setting may damage soft seats and other internal parts.
• The recommended selection for orifice diameters is the smallest orifice that will handle the flow.
• Regulator body size should never be larger than the pipe size. In many cases, the regulator body is one size smaller than the pipe size.
• When adjusting set point, the regulator should be flowing at least five percent of the normal operating flow.
• Direct-operated regulators generally have faster response to quick flow changes than pilot operated regulators.
• Droop is the reduction of outlet pressure experienced by pressure-reducing regulators as the flow rate increases. It is stated as a percent, in inches of water column (mbar) or in pounds per
  square inch (bar) and indicates the difference between the outlet pressure setting made at low flow rates and the actual outlet pressure at the published maximum flow rate. Droop is also
  called offset or proportional band.
• Downstream pressure always changes to some extent when inlet pressure changes.
• Most soft-seated regulators will maintain the pressure within reasonable limits down to zero flow. Therefore, a regulator sized for a high flow rate will usually have a turndown ratio
  sufficient to handle pilot-light loads during off cycles.
• Diaphragms leak a small amount due to migration of gas through the diaphragm material. To allow escape of this gas, be sure casing vents (where provided) remain open.
• A disk with a cut appearance probably means you had an overpressure situation. Thus, investigate further.
• When using relief valves, be sure to remember that the reset point is lower than the start-to bubble point. To avoid seepage, keep the relief valve set point far enough above the regulator set
  point.
• Vents should be pointed down to help avoid the accumulation of water condensation or other materials in the spring case.
• Make control line connections in a straight run of pipe about 10 pipe diameters downstream of any area of turbulence, such as elbows, pipe swages, or block valves.
• Do not use needle valves in control lines; use full – open valves. Needle valves can cause instability.