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Y11X Direct Acting NPT Pressure Reducing Valve

Y11X Direct Acting NPT Pressure Reducing Valve

  • Model:Y11X-10/Y11X-16/Y11X-10Q/Y11X-16Q
  • Specification:DN15-DN50
  • Temperature:≤ 80 ℃
  • Medium:Water and water-like media
  • Pressure:PN10,PN16
  • Connection method: NPT
  • Driving method:Spring
  • Material:ductile iron、Grey Cast Iron
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Y11X Direct Acting NPT Pressure Reducing ValveOverview

Y11X Direct Acting NPT Pressure Reducing Valve Overview

Y11X Direct Acting NPT Pressure Reducing Valve is a compact, responsive automatic pressure regulating valve. It adopts a direct-acting working principle, requiring no external power source. It uses the medium’s own energy and built-in sensitive components (such as diaphragms or pistons) to sense and control downstream pressure. Its main function is to automatically reduce and stabilize fluctuating, high inlet pressure to the user-preset outlet pressure. This protects downstream pipelines, instruments and water-consuming equipment from overpressure damage and ensures stable operation. Usually made of copper alloy or stainless steel with threaded connections, the valve is widely used in building water supply, fire protection branches, gas pipelines, small irrigation systems and industrial equipment inlets—all scenarios requiring precise pressure stabilization.

Y11X Direct Acting NPT Pressure Reducing Valve Product Image

Y11X Direct Acting NPT Pressure Reducing ValveCharacteristic

Y11X Direct Acting NPT Pressure Reducing Valve Features

1. Direct Acting, Responsive  

Adopting a mechanical structure with direct linkage between spring and diaphragm/piston, the valve requires no pilot piping or external control. When downstream pressure changes, it instantly drives the valve core to adjust flow area rapidly, achieving immediate response and compensation for pressure fluctuations with direct and efficient pressure stabilization.

2. Compact Design, Flexible Installation  

Highly integrated overall structure ensures small size and light weight. Standard internal thread connections (e.g., G1/2″, G3/4″) facilitate direct installation on pipelines, instruments or equipment inlets. It is especially suitable for precise pressure control in space-constrained branch pipes, terminals or equipment frontends.

3. Intuitive Adjustment, Precise Setting  

A clear pressure adjustment mechanism is located on the top of the valve body. By turning the adjusting screw, the preload of the main spring can be precisely set, enabling direct and linear adjustment and locking of the required outlet pressure. Operation is simple and intuitive, with easy calibration.

4. Easy Maintenance, High Reliability  

Featuring a small number of structural parts, the internal moving components are simple and reliable. The common modular design allows easy inspection and replacement of key parts (e.g., diaphragms, valve core seals). No complex external piping reduces leakage points, resulting in minimal daily maintenance and stable operation.

5. High-Quality Material, Wide Application  

Key flow-through components are made of brass or stainless steel, offering good corrosion resistance and mechanical strength. Suitable for cold water, hot water, compressed air and various non-corrosive liquids and gases, it is an economical and practical pressure stabilization solution for building water supply and drainage, gas pressure reduction, small process pipelines and other systems.

Y11X Direct Acting NPT Pressure Reducing Valvestructure principle

Y11X Direct Acting NPT Pressure Reducing Valve Structure Diagram

Parts Name Material List

序 号NO.名称Name材料Material
1阀体BodyGrey Cast Iron
2缸套bushing2Cr13
3橡胶膜片rubber diaphragm尼龙强化橡胶nylon-reinforced rubber
4密封垫gasket丁晴橡胶NBR
5阀盖bonnetGrey Cast Iron
6活塞、缸套piston、sleeve不锈钢Stainless Steel
7调节弹簧regulating spring硅锰钢silicon-manganese steel


Y11X Direct Acting NPT Pressure Reducing Valvetechnology parameter
Performance Specification
Nominal Pressure1.0/1.6MPa
Shell Test1.5/2.4
Seal Test1.1/1.76
Suitable Temp.≤80


Y11X Direct Acting NPT Pressure Reducing Valvestandard size

Dimensions Standard Requirements

1. The structural length of the valve shall conform to the standard GB/T12221.

2. The connecting flange shall conform to the standard GB4216/GB 1193.

Y11X Direct-Acting NPT Pressure Reducing Valve View Drawing

Y11X Direct Acting NPT Pressure Reducing Valve Dimensions Table

DNGLHH1
151/210017060
203/410017065
25112018575
3211/415019288
4011/215023090
50218027098