TMCo has been manufacturing safe, dependable, accurate & affordable Sure Shot single & dual chamber orifice fittings since 2003. With safety and accuracy in mind, no other orifice fitting can compare to the high standards of TMCo's Sure Shot.


Single Chamber Fittings
Single Chamber Fittings are the most widely accepted means for flow measurement of gas and other hydrocarbons in the oil, gas & petrochemical industry.
Sure Shot® single chamber fitting provides both cost and time saving opportunities to the operator.
Single Chamber Features:
Single Chamber Fitting Applications:
- Gas Gathering
- Compressor Stations
- Onshore – Offshore Production
- Coal-Seam Gas Measurement
- Gas Distribution
- Gas Transmission
- Process Gas Plant
Fitting Pressure Ratings:
- ANSI Class 150 (285 PSI CWP)
- ANSI Class 300 (740 PSI CWP)
- ANSI Class 600 (1480 PSI CWP)
Standard Materials of Construction:
- Body Material – A-216 WCB/WCC - Consult factory for any other fitting body material
- Flange Ratings – ANSI Class 150 to ANSI Class 600
- Fitting End Connections – F x W
- Raised Face Flange is standard for ANSI Class 150 to ANSI Class 600
Conforms to the following industry standards:
- AGA 3/API 14.3, ISO-5167
- ANSI B31.3, MSS SP-55, ANSI B16.5
- Fittings conform to NACE MR-01-75-2000
Operating Range:
- Sizes 2” thru 6” ANSI Class 150, 300, & 600
- Temperature -20° F to 275° F (-29° C. to 135° C.)
Quality Check:
- Hydrostatic test 1-1/2 times rated CWP.
- Tested for positive plate seal, pressure tap integrity, seal protrusion and eccentricity

Dual Chamber Orifice Fitting
Sure Shot® Dual Chamber Orifice fittings fully conform to the latest AGA 3/API 14.3 stringent requirements. They require no added uncertainty and provide accurate performance over the orifice plate beta ratio range from 0.1 to 0.75 within 0.5% flow accuracy to theoretical value.
Dual Chamber Features:
- Two-piece body allows fast, safe inexpensive orifice plate change under pressure
- Protected positive orifice plate seal design extends service life
- Meets or exceeds all industry specifications (AGA3/API 14.3)
- 2”-16” ANSI Classes 150-600. For higher ratings consult factory
- Few moving parts, positive sealing with low maintenance
- Unique safety lock helps to prevent accidental opening under pressure while removing the orifice plate, indicates proper carrier location, and provides precise plug operation positioning
Fitting Pressure Ratings:
- ANSI Class 150 (285 PSI CWP)
- ANSI Class 300 (740 PSI CWP)
- ANSI Class 600 (1480 PSI CWP)
Standard Materials of Construction:
- Body Material – A-216 WCB / WCC
- Flange Ratings – ANSI Class 150 to ANSI Class 600 inclusive.
- Fitting End Connections – F x W, F x F ?Note: RTJ Flange facing available upon request. Consult factory for any other fitting body material.
Conforms to the following industry standards:
- AGA 3/API 14.3, ISO-5167
- ANSI B31.3, MSS SP-55, ANSI B16.5
- Fittings available for NACE MR-01-75-2000
- CRN Certified
Operating Range:
- Sizes 2” thru 16” ANSI Class 150, 300, & 600
- Temperature -20° F to 275° F (-29° C. to 135° C.)
- Schedule 40 and schedule 80 standard. Note: Consult factory for larger sizes and other operating conditions.
Quality Check:
- Hydrostatic test 1-1/2 times rated CWP.
- Tested for positive plate seal, pressure tap integrity, seal protrusion and eccentricity
Specifications:
Please download the Product Brochure PDF for more information.