TX3 Molten Salt Triple-offset Butterfly Valve
TX3 Molten Salt Triple-offset Butterfly Valve
TX3 Molten Salt Triple-offset Butterfly Valve
Product Brand
Triple Offset Butterfly Valve
About this product

The Valtek® TX3 Molten Salt triple-offset butterfly valve provides concentrated solar power (CSP) plant operators with reliable performance, tight shut-off and minimized maintenance in molten salt applications.

It can withstand temperatures ranging from 260°C (500°F) to 600°C (1,112°F) in thermal energy storage for industrial processes or power generation. Leakage is eliminated by the design and construction, which includes standard live-loaded Thermiculite or hybrid packing.

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High T
1112 F


  • Superior leakage resistance results from the shutoff design and construction that reliably complies with FCI 70-2 Class V for control valve applications and API 598 for On-Off applications.
  • Constant temperatures within the valve stem and packing region are ensured with a comprehensive solution for packing/heat tracing including integrated heating, controls, and sensors
  • Reliable packing performance owing to materials and configuration engineered to match the customer’s specific packing load and performance requirements 
  • Minimized maintenance can be achieved with in-line maintenance (consult Flowserve engineering special

Applicable Standards

  • ASME B16.34
  • ASME B16.5
  • ASME B16.10
  • API 609
  • FCI 70-2
  • API 598
  • EN-122661 Rate A

Certificates and Approvals

  • Available API 607 and ISO 10497 for fire safe; ISO 15848-1 for fugitive emissions

Temperatures : 260°C to 600°C (500°F to 1,112°F)

Cold salt up to 400°C (752°F) A or SA-216-WCB carbon steel
Hot salt above 400°C (752°F) A or SA-351-CF8C stainless steel

Pressure Range: ASME class 300/600, 150/900/1500 (engineered to order [ETO])

Size Range: NPS 3 to 24 and >24 in. (ETO)

Body style

  • Buttweld flanges standard; others engineered to order (ETO)
  • Short pattern standard; long pattern available

Valtek TX3 Triple-offset Butterfly Control Valve

Durco TX3 Triple-offset Butterfly Valve


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