U41F Plunger Valve
• U41F-16Q / U41F-25Q / U41F-16C / U41F-25 / U11F-16Q, PN16/PN25 plunger valve
• DN15–DN200 flanged connection, working temperature ≤200°C
• Ductile cast iron or WCB cast steel body options
• PTFE seal ring for reliable shut-off performance
• Suitable for water, steam, petroleum, and oil products
Gaoshan Valve — U41F Plunger Valve
Model: U41F-16Q / U41F-25Q / U41F-16C / U41F-25 / U11F-16Q | Pressure: PN16 / PN25 | Connection: Flanged | Medium: Water, Steam, Petroleum
Product Overview
The U41F Plunger Valve is a specialized shut-off valve designed for water, steam, oil, and petroleum pipelines operating at temperatures up to 200°C. Featuring a unique plunger design with a precision-machined cylindrical sealing surface, this valve provides superior sealing performance compared to conventional globe valves. The non-rotating plunger mechanism eliminates wear on the seat during operation, ensuring long service life and consistent leak-free performance in industrial applications.
Key Advantages
Superior Sealing Performance
Equipped with a PTFE seal ring that provides excellent chemical resistance and a tight, leak-free seal even under demanding operating conditions up to 200°C.
Non-Rotating Plunger Design
The cylindrical plunger moves vertically without rotation, eliminating abrasive wear between the plunger and seat ring. This design significantly extends service life compared to conventional rotary-seal valves.
Dual Material Options
Available in ductile cast iron body with 2Cr13 stem and plunger (Q-series), or WCB cast steel body with stainless steel stem and plunger (C-series), offering flexibility for different service conditions.
Wide Size Range
Covers an extensive size range from DN15 to DN200, making it suitable for both small-diameter branch lines and larger main pipeline applications across various industries.
Manual Handwheel Operation
Features an ergonomic handwheel for smooth and precise manual control. The straightforward linear actuation allows operators to quickly open or close the valve with minimal effort.
Flanged Connection — Easy Installation
Standard flanged ends ensure secure bolted connections compatible with ANSI/DIN piping systems. Face-to-face dimensions follow national standards for easy integration into existing pipeline infrastructure.
Pressure Test Data
| Parameter | PN16 | PN25 |
|---|---|---|
| Shell Test Pressure (Strength) | 2.4 MPa | 3.8 MPa |
| Seal Test Pressure | 1.8 MPa | 2.8 MPa |
| Working Temperature | ≤ 200°C | |
| Applicable Medium | Water, Steam, Petroleum, Oil Products | |
Materials for Main Parts
| Model | Body, Seat Ring | Stem, Plunger | Seal Ring |
|---|---|---|---|
| U41F-16Q / U41F-25Q | Ductile Cast Iron | 2Cr13 | PTFE |
| U41F-16C / U41F-25 | WCB Cast Steel | Stainless Steel | PTFE |
Dimensions & Weight
| PN Rating | Dimension | DN15 | DN20 | DN25 | DN32 | DN40 | DN50 | DN65 | DN80 | DN100 | DN125 | DN150 | DN200 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PN16 PN25 | L (mm) | 130 | 150 | 160 | 180 | 200 | 230 | 290 | 310 | 350 | 400 | 480 | 600 |
| H1 (mm) | 160 | 170 | 195 | 220 | 252 | 272 | 315 | 345 | 397 | 587 | 665 | 740 | |
| H (mm) | 135 | 141 | 160 | 182 | 209 | 225 | 257 | 280 | 318 | 485 | 566 | 621 | |
| D0 (mm) | 120 | 120 | 120 | 180 | 180 | 180 | 240 | 240 | 240 | 280 | 280 | 280 | |
| Weight (kg) | 3/4 | 4/4 | 5/6 | 7/8 | 10/12 | 13/15 | 25/28 | 30/55 | 40/45 | 61/68 | 85/96 | 135/155 |
* Weight values shown as PN16 / PN25 respectively per size. D0 = Handwheel diameter.
Applicable Media
Steam
Petroleum
Oil Products
Condensate Systems
U41F Plunger Valve — Product Image
U41F Plunger Valve — Structure Diagram
Request a Quote
Need a U41F plunger valve for your water, steam, or petroleum piping system? Gaoshan Valve offers PN16/PN25 ratings, DN15–DN200, with ductile cast iron or WCB cast steel body options and PTFE seal rings. Contact us today for competitive pricing, technical consultation, and fast delivery.