WHM Single Chamber (Simplex, Junior) Orifice Fitting
As an orifice plate holding device, orifice fitting can house and accurately position an orifice plate within a pipe or tube to measure fluid flow. It is just one component in a flow measurement system
- To prevent liquid or gas leakage, and do not require the flange to be widened for orifice plate inspection and replacement
- Maintenance by replacing orifice plates, maximize uptime without removing connections in the pipeline
- Confirm to API MPMS 14.3.2 /AGA No. 3, ISO 5167-2 recommendations and in accordance with ASME and ASTM specifications
- Hydrostatic test at least 1.5 times CWP (API Std 598 )
- Major parts can be interchanged with international brand products
Features & Benefits:
- Field repairable
- Special trim available
- Pressure Ratings: Class 150-1500
- Available sizes: 2” to 6”
- Orifice plate and seal are not included in all units
Applications:
- Oil & Gas transmission
- Oil & Gas Pipeline
- Oil & Gas distribution
- Offshore Oil & Gas production i.e. FPSO’s
- Oil & Gas plants
D series with Seat Gap width 11/16" and 2 pairs of pressure taps
E series with Seat Gap width 9/16" and 4 pairs of pressure taps
F series with Seat Gap width 11/16" and 4 pairs of pressure taps
| Mode | D series | E series | F series |
| Seat Gap width | 11/16" (17.4mm) | 9/16" (14.3mm) | 11/16" (17.4mm) |
| QTY of pressure taps | 2 pairs | 2 pairs | 2 pairs |
| Telemetering tap | N/A | 2 pairs | 2 pairs |
| Ring holder | Plain bore | Notched bore | Plain bore |
| Seal ring | Edge seal rings (old style) | New style 14.3 | Edge seal rings (old style) |
| NPS | 2"/3"/4" | 2"/3" | 2"/3"/4"/6”/8” |
| SCH | 40/80 | 40/80 | 40/80 |
| Connection | Raised Flange neck (F-W or FN) Weld neck (W-W Or WN) |
Raised Flange neck (F-W or FN) Weld neck (W-W Or WN) |
Raised Flange neck (F-W or FN) Weld neck (W-W Or WN) |
| Manufacture Process | Investment casting + CNC center | Investment casting + CNC center | Investment casting + CNC center |
| Purchasing process | Sample(1-3) then big lot | Sample(1-3) then big lot | Sample(1-3) then big lot |
| Body Material (Standard) | ASME SA 216 WCC / WCB | ASME SA-216 WCC / WCB | ASME SA-216 WCC / WCB |
| Trim Material | Carbon steel | Carbon steel / Stainless Steel | Carbon steel / Stainless Steel |
| Specification | API 14.3/AGA No.3 ISO 5167 GB/T 21446 ASME B16.34 ASME B16.5 |
API 14.3/AGA No.3 ISO 5167 GB/T 21446 ASME B16.34 ASME B16.5 |
API 14.3/AGA No.3 ISO 5167 GB/T 21446 ASME B16.34 ASME B16.5 |
| Pressure rating (ASME Class) | 600 | 600 | 600 |
| Measuring type | Differential Pressure |
| Fluid type | Liquid, gas, standard medium, sweet corrosion medium, acid medium, low temperature |
| Uncertainty of displacement coefficient | Conform to AGA 3/API 14.3 or ISO 5167-2 or the others |
| Orifice meter size | 2”- 12” |
| Pressure rating | ANSI Class 150-2500 |
| Process temperature range | -20°F-160°F |
| Flange type | ANSI RF, ANSI RTJ etc. |
| Material | Carbon steel(WCB /LCC), Alloy steel WC6 WC9, CF8/CF8M/CF3M, Duplex Stainless Steel |
Single Chamber Orifice Components
WHM Supplies all components for different type of single orifice fittings.
Single Chamber Orifice fitting Body
Material:
ASME SA216 Gr WCB WCC
ASME SA 217 Gr WC6 WC9
ASME SA 352 Gr LCC
Process: Investment casting for 2”-6”, Sand Casing for 8” machined
MOQ: 50
Clamping Bar
Size: 2”/3”/4”/6”/8”
Material: stainless steel 304/316 or carbon steel 1020 ZP
Process: Plate machined
MOQ: 100
Clamping Bar Screw and Plug Thread
Material: stainless steel 304/316 or alloy steel ZP and ASME SA 105 / 1020 Carbon steel ZP
Process: Barstock or forge machined
MOQ: 500
Sealing Bar
Size: 2”/3”/4”/6”/8”
Material: carbon steel 1020 ZP or stainless steel 304/316
Process: Plate machined
MOQ: 100
Plate Carrier / Ring Holder
Size: 2”/3”/4”/6”/8”
Material: alloy steel ANSI 4130 / 4140 ZP or stainless steel ASME SA351 CF8M
Process: Investment casting machined
MOQ: 50
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