Model 8000

Isolation Valve Models 8000F and 8000T are designed to incorporate two safety relief valves to protect in an overpressure emergency. Only one safety relief valve is in operation at a time, while the other is a back up. If a problem occurs, such as a leak, simply switch to the other alternate safety valve. Remove the faulty valve and make repairs. This insures that one safety relief valve is in operation at all times.

Standard Features

• Automatic pressure balance at start of position change
• Pressure bleed valve at each position also serves for in-line testing
• Safety handle locks in either position with external indicator
• Low profile design for easy installation in tight areas
• Low-pressure drop conforms to API RP 520 Part 2 and ASME Section VIII, Division 1, Appendix M

Specifications

• Sizes: 1/2", 3/4", 1", 1 1/2", 2", 3" and 4" design.
• Offered with flanged (8000F) or threaded connections (8000T).
• Temperature: –250F to 700F.
• MAWP: Up to 6000 psig on threaded connections
• Seals: Buna-N, EPDM, Neoprene, FKM, Silicon, PTFE, FFKM
• Low E Design available for low emission requirements

8000F Product Specification Sheet
8000T Product Specification Sheet
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8800 Series Changeover Valve

The Total Valve Systems 8800 Series Changeover Valve is designed to incorporate two safety relief valves installed on a single vessel system to protect in an overpressure emergency. Only one safety relief valve is in operation at a time while the other is installed as an interactive backup. If a problem occurs, such as a leak, simply switch to the other safety relief valve and remove the faulty valve to make repairs. The 8800 Series ensures one safety relief valve is in operation at all times which yields minimal interruptions to process operations during an unplanned outage.

Features

• Optimized flow coefficient (Cv) to ensure less than 3% pressure drop per API RP520 Part II.
• Designed for gas/vapor, liquid, mixed phase and steam service including ASME BPVC Section I boiler applications.
• Low profile design for easy installation in tight areas.
• Designed to API 622 and API 624 standards for low fugitive emissions.
• Pressure bleed valves installed at both outlets to bleed away process fluid as well as in-line testing capability.
• Engineered, manufactured and tested in Broken Arrow, Oklahoma, USA.

Technical

• Sizes: NPS 1 /2"-1 O"
• Service media: GasNapor, Liquid, Steam, Mixed Phase
• End connections: RFFE, RTJ, BWE, SWE, MNPT, FNPT
• Pressure class: ANSI 150-2500
• Temperature: -250 F to 1200 F
• Actuation: Materials: Handwheel, Pneumatic, Electric, Hydraulic
• Soft goods: A216 WCB, A351 CF8M, A352 LCC, Mon el, Haste I loy Buna, EPDM, Neoprene, FKM, Silicon, PTFE, FFKM
• Approvals: API RP520 Part 11, ASME BPVC Section VIII, ASME BPVC Section I Code Case 2254, ASME B16.34, API 598, API 622, API 624

8800 Changeover Valve Specification Sheet
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