A self-actuated pressure regulator operates without any external air supply or electric power, using the process medium itself as the driving signal to automatically hold a set pressure. The valve integrates the sensing element and regulating trim into one compact body, removing the separate actuator, positioner, and air set that add installation and upkeep cost. A balanced plug keeps operating torque low and regulation stable across a wide pressure range, while the streamlined flow path reduces erosion from high-velocity steam, gas, or oil. Interchangeable sensing elements let the same body be configured for downstream pressure control, upstream pressure control, differential pressure, temperature, or flow limiting. Seat and diaphragm materials in FKM or PTFE can be matched to acid, alkali, steam, and oil service.
Pressure regulating loops in steam and gas systems are rarely identical: piping runs, sensing taps, and set pressures change project by project. Our drawing-based production adapts the regulator body length, end connection, and sensing-tube routing to the actual piping layout, so installers do not have to add extra elbows or relocate taps on site. Standard bodies in WCB, 304, and 316L are kept in stock for common sizes, while special castings for non-standard face-to-face dimensions are scheduled against the customer's project calendar.
Specifications
|
Parameter |
Specification |
|
Nominal size |
DN15-DN300 |
|
Nominal pressure |
PN16/PN25/PN40, Class150-Class600 |
|
Control mode |
Downstream pressure / upstream pressure / differential pressure / temperature / flow |
|
Body material |
WCB, LCB, 304, 316L, PTFE-lined |
|
Seat material |
FKM, PTFE |
|
Leakage class |
Class IV-VI optional |
|
Media temperature |
-40 to 350 C |
|
Actuation |
Medium self-operated, no external energy required |
Applications
District heating and heating networks.
The self-actuated design holds a stable supply pressure without external power, which matters across long heating loops where instrument air or wired control may not be available.
Chemical circulation and oil/gas storage piping.
Balanced trim handles upstream pressure swings while keeping downstream load unaffected; FKM/PTFE seats resist oil and mildly corrosive fluids.
Boiler and small steam plant pressure stabilization.
No air supply means the regulator can be installed directly on steam take-off lines, and FKM/PTFE seals suit saturated and superheated steam service.
Customization
- Body material: WCB, LCB, 304, 316L, or PTFE-lined for corrosive media.
- Control mode: downstream pressure, upstream pressure, differential pressure, temperature, or flow.
- End connection: flanged as standard; special face-to-face dimensions available on customer drawing.
- Seat and diaphragm material: FKM, NBR, or PTFE per medium.
- Leakage class: IV to VI according to service. OEM/ODM production supported on customer drawings and samples.
Packaging & Transportation
Standard export packing. Every valve undergoes 100% pressure testing before dispatch. During production we share pressure-test videos, packing photos, and a detailed packing list, and complete customs documents are provided for export orders.
FAQ
Q1. Can you manufacture to our design?
A. Yes, we can manufacture to customer drawings, including non-standard face-to-face dimensions and special sensing-tube routing.
Q2. How do you guarantee quality?
A. We run a complete ISO9001 quality management system; every valve undergoes 100% pressure testing before delivery.
Q3. What is the delivery time?
A. We keep large stock of standard body castings in common materials and pressures; stocked bodies ship in about 10+ days. If a special body needs a new casting, lead time is longer but matched to the project schedule.
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