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Series-OP Orifice Plates

Series OP, Orifice Plate is an accessory for HD Main Valve to see more accessory options please visit the HD Accessories Section.

The Series OP Orifice Plate with its drilled orifice pattern is installed after the pressure regulating valve to smooth out turbulence caused by the pressure drop across the regulator. Typical noise reduction levels of 5-10 dBA; higher possible. Manufactured from SA-105 Carbon Steel, 304 SST, or 316 SST.

ModelSizeTypeOutside Dia.Body Material
OP1-14-1501"150# FLG4-1/4"A105 CS
OP1-14-3001"300# FLG4-7/8"A105 CS
OP1-16-1501 1/2"150# FLG5"A105 CS
OP1-18-3002 1/2"300# FLG
OP1-17-3002"300# FLG6-1/2"A105 CS
OP1-18-1502 1/2"150# FLG7"A105 CS
OP1-18-3002 1/2"300# FLG
OP1-19-1503"150# FLG7-1/2"A105 CS
OP1-19-3003"300# FLG8-1/4"A105 CS
OP1-20-1504"150# FLG9"A105 CS
OP1-20-3004"300# FLG10"A105 CS
OP1-21-1505"150# FLG10"A105 CS
OP1-21-3005"300# FLG11"A105 CS
OP1-22-1506"150# FLG11"A105 CS
OP1-22-3006"300# FLG12-1/2"A105 CS
OP1-23-1508"150# FLG13-1/2"A105 CS
OP1-23-3008"300# FLG15"A105 CS
OP1-24-15010"150# FLG16"A105 CS
OP1-24-30010"300# FLG17-1/2"A105 CS
OP1-25-15012"150# FLG19"A105 CS
OP1-25-30012"300# FLG20-1/2"A105 CS
OP1-26-15014"150# FLG21"A105 CS
OP1-26-30014"300# FLG23"A105 CS
OP2-14-1501"150# FLG4-1/4"304 SST*
OP2-14-3001"300# FLG4-7/8"304 SST*
OP2-16-1501 1/2"150# FLG5"304 SST*
OP2-16-3001 1/2"300# FLG6-1/8"304 SST*
OP2-17-1502"150# FLG6"304 SST*
OP2-17-3002"300# FLG6-1/2"304 SST*
OP2-18-1502 1/2"150# FLG7"304 SST*
OP2-18-3002 1/2"300# FLG7-1/2"304 SST*
OP2-19-1503"150# FLG7-1/2"304 SST*
OP2-19-3003"300# FLG8-1/4"304 SST*
OP2-20-1504"150# FLG9"304 SST*
OP2-20-3004"300# FLG10"304 SST*
OP2-21-1505"150# FLG10"304 SST*
OP2-21-3005"300# FLG11"304 SST*
OP2-22-1506"150# FLG11"304 SST*
OP2-22-3006"300# FLG12-1/2"304 SST*
OP2-23-1508"150# FLG13-1/2"304 SST*
OP2-23-3008"300# FLG15"304 SST*
OP2-24-15010"150# FLG16"304 SST*
OP2-24-30010"300# FLG17-1/2"304 SST*
OP2-25-15012"150# FLG19"304 SST*
OP2-22-1506"150# FLG11"304 SST*
OP2-25-30012"300# FLG20-1/2"304 SST*
OP2-26-15014"150# FLG21"304 SST*
OP2-26-30014"300# FLG23"304 SST*
OP3-14-1501"150# FLG4-1/4"316 SST*
OP3-14-3001"300# FLG4-7/8"316 SST*
OP3-16-1501 1/2"150# FLG5"316 SST*
OP2-25-15012"150# FLG19"304 SST*
OP3-16-3001 1/2"300# FLG6-1/8"316 SST*
OP3-17-1502"150# FLG6"316 SST*
OP3-17-3002"300# FLG6-1/2"316 SST*
OP3-18-1502 1/2"150# FLG7"316 SST*
OP3-18-3002 1/2"300# FLG7-1/2"316 SST*
OP3-19-1503"150# FLG7-1/2"316 SST*
OP3-19-3003"300# FLG8-1/4"316 SST*
OP3-20-1504"150# FLG9"316 SST*
OP3-20-3004"300# FLG10"316 SST*
OP3-21-1505"150# FLG10"316 SST*
OP3-21-3005"300# FLG11"316 SST*
OP3-22-1506"150# FLG11"316 SST*
OP3-22-3006"300# FLG12-1/2"316 SST*
OP3-23-3008"300# FLG15"316 SST*
OP3-24-15010"150# FLG16"316 SST*
OP3-24-30010"300# FLG17-1/2"316 SST*
OP3-25-15012"150# FLG19"316 SST*
OP3-25-30012"300# FLG20-1/2"316 SST*
OP3-26-15014"150# FLG21"316 SST*
OP3-26-30014"300# FLG23"316 SST*
OP1-18-3002 1/2"300# FLG
Product Overview
The Series OP Orifice Plate with its drilled orifice pattern is installed after the pressure regulating valve to smooth out turbulence caused by the pressure drop across the regulator. Typical noise reduction levels of 5-10 dBA; higher possible. Manufactured from SA-105 Carbon Steel, 304 SST, or 316 SST.
Selection / Sizing / Capacities
Selection: Series OP orifice plates are custom engineered to maximize noise attenuation and reduce dbA to the lowest achievable value. The number and diameter of holes will be determined based on application conditions, and the plate diameter will typically be equal to the recommended downstream pipe size.

Therefore, the following information is required for selection:
• Inlet (Supply) Pressure to the HD/HSP Regulator*
• Outlet (Downstream) Pressure of the HD/HSP Regulator*
• Steam Flow Rate (lb/hr)

Notes: 1) Other sizes and flange connections available; Consult Factory.

2) Orifice Plates may be available for other valves; Consult Factory.


Dimension and Weights