The ZTP  pneumatic desuperheating and pressure reducing valve is a high-performance industrial control device that integrates steam pressure regulation and temperature control into a single unit. Specifically designed for waste heat recovery in thermal power plants, boiler steam systems, and various thermal engineering projects, it achieves both pressure reduction and water-spray cooling within a single valve body. The core principle involves a pneumatic actuator driving a multi-stage throttling plug for pressure reduction, combined with a built-in precision atomizing nozzle system that injects desuperheating water uniformly into the high-speed steam flow for rapid heat exchange. The ZTP series significantly simplifies pipeline layouts, reduces footprint, and minimizes heat loss. With its exceptional stability under high-temperature and high-pressure-drop conditions, this valve is a core execution element for ensuring the efficient operation of modern thermal networks.

Product Image of ZTP Pneumatic Desuperheating and Pressure Reducing Valve

1.Dual-function integrated structure:Completes pressure reduction and desuperheating processes simultaneously within one valve body, effectively replacing the traditional combination of a pressure reducing valve and a separate desuperheater, greatly simplifying the process and reducing costs.
2.Multi-stage throttling technology:Internals utilize a multi-stage cage or cascaded structure to release high-pressure steam step-by-step, effectively suppressing flashing and cavitation while significantly reducing noise and vibration caused by high-velocity fluids.
3.Efficient and precise atomization:Features integrated high-performance stainless steel nozzles where water injection is dynamically compensated against steam flow. Precision spray angles ensure complete vaporization within a short distance, offering high temperature control accuracy without the risk of water droplet erosion.
4.Powerful pneumatic drive:Equipped with high-thrust multi-spring diaphragm or piston actuators for stable torque output. Paired with intelligent positioners, it achieves millisecond-level response and precise proportional regulation of process parameters.
5.High-temperature and pressure-resistant materials:Bodies are available in WCB, WC6, WC9, or stainless steel. Sealing surfaces are hard-faced with Stellite to ensure excellent erosion resistance under 560℃ and high-pressure fluctuations.
6.Intrinsic safety and fail-safe protection:Powered by clean compressed air, it provides natural explosion protection. Fail-safe modes (full open or full close) can be configured to ensure the thermal system remains in a safe state during air supply failure.
7.Precision guiding and stability:Utilizes an enhanced cage-guided structure with a large and precise guiding area. This ensures exact axial alignment of the plug throughout its stroke, resisting mechanical stress caused by fluid expansion.
8.Modular maintenance:The compact scientific design features modular internals. Inspection and replacement of the plug, nozzles, and seals can be completed from the top without removing the valve body from the pipeline, shortening downtime.

Structural Drawing of ZTP Pneumatic Desuperheating and Pressure Reducing Valve

List of Component Names and Materials

Performance Specification Sheet

Standard requirements for external dimensions

1. The structural length of the valve shall comply with the standard of GB/T12221

2. Connecting flanges according to GB/T17241.6 standard

Outline dimension table（Unit：mm）

Due to the rapid R&D iteration speed of valve products from China Kaivex Valve Group Co., Ltd., the above technical parameters and specification documents, including product overview, features, parts materials, outline dimension charts, CAD drawings, and product instruction manuals, are for your reference only. For actual applications, please contact our valve sales engineers to obtain the support you need for free. Thank you!