Conval Throttling Valve

Conval Throttling Valve

The Conval Clampseal ® throttling valve is designed for severe service applications requiring repeatable flow control and dependent shutoff.

The throttling valve design includes a removable seat/venturi for easy replacement or re-sizing in cases where conditions change, a pressure seal bonnet provides easy access for servicing with no welds to cut or seal rings or gaskets to replace, and a position indicator so that the valve position is known.

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Conval Throttling Valve
Conval Throttling Valve

Design Parameters

Pressure Class:ASME Class 900 - 4500
Temperature:Up to ~1200°F (≈ 650°C)
Dimensions:DN15 – DN100
Size Range:½" – 4"
Certification:ASME B16.34, API 598, MSS‑SP‑61
Material:SA105, F22, F91, 316/316H, High Alloys
  • Attemperator / Desuperheater Water Control
  • Boiler Feedwater Recirculation
  • Boiler Startup / Warmup
  • Bypass Throttling
  • Continuous or Intermittent Blowdown

Frequently Asked Questions

Find quick answers to the most common questions

What makes Conval’s throttling trim different?

A venturi seat separates sealing from throttling, Stellite hardfacing resists erosion, and a guided stem prevents vibration for stable, long‑life control.

How does the Clampseal® bonnet support in‑line maintenance?

The pressure‑seal bonnet lets technicians remove the seat, venturi, stem, and packing without cutting welds or removing the valve from the line.

How does Conval prevent wire‑drawing and seat damage?

High‑velocity flow is staged downstream in the venturi, keeping the sealing face out of the throttling zone and protecting it from erosion.

Why does Conval use a Y‑pattern body?

The Y‑pattern reduces turbulence, lowers body erosion, improves control stability, and delivers higher Cv than a T‑pattern globe.

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    Marc Soucy, P.Eng

    National Sales Manager

    I am a mechanical engineer with 35+ years of experience in plant operations, maintenance, and technical sales. As National Sales Manager I bring deep expertise in the power industry and specialty valve market. Having worked on both sides of the desk, I understand the challenges plant teams face. You can trust that I won’t recommend a product unless I know that it will do the job for you.

    Marc Soucy, P.Eng

    Directeur National des Ventes

    Je suis ingénieur en mécanique et possède plus de 35 ans d'expérience en exploitation, maintenance et ventes techniques industrielles. En tant que directeur national des ventes, j'apporte une expertise approfondie du secteur de l'énergie et du marché des vannes spécialisées. Ayant travaillé sur ces deux fronts, je comprends les défis auxquels sont confrontées les équipes d'usine. Soyez assuré que je ne recommanderai aucun produit sans être certain qu'il répondra à vos besoins.