Jianqiao Valve Industry Group Co., Ltd. Jianqiao Valve Industry Group Co., Ltd.
Internal thread plunger valve

Internal thread plunger valve

Internal thread plunger valve
Internal thread plunger valve
Internal thread plunger valve

Internal thread plunger valve
Internal thread plunger valve
Internal thread plunger valve

Internal thread plunger valve

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The Internal Thread Plunger Valve is designed for industrial applications with small-diameter pipelines, requiring tight shut-off and accurate flow regulation. Its plunger-style disc ensures minimal leakage and smooth operation. Threaded connections allow easy installation and maintenance. Suitable for water, oil, gas, chemicals, and laboratory or process lines.

Internal thread plunger valve

The Internal Thread Plunger Valve utilizes a compact plunger disc design for precise throttling and reliable isolation in small-diameter pipelines. Threaded connections enable quick installation without flanges or welding, making it ideal for chemical, petrochemical, water, and gas distribution systems.

Manufactured from high-strength stainless steel or alloy materials, the valve ensures corrosion and wear resistance. It supports manual handwheel operation, and can be adapted for pneumatic or electric actuation in specialized applications.

Key Features

  • Plunger-type disc for tight shut-off
  • Internal threaded connection for easy installation
  • Precise throttling and flow regulation
  • Corrosion- and wear-resistant construction
  • Compact design for small-diameter pipelines
  • Manual or optional automated operation
  • Low leakage and smooth performance
  • Durable with long service life
  • Minimal maintenance required
  • OEM customization available

OEM & Customization Capabilities

OEM Service Scope

  • Custom valve sizes (DN8–DN100)
  • Pressure ratings PN10–PN63
  • ANSI, DIN, JIS, BS, GB internal thread standards
  • Custom plunger and seat materials
  • Manual, pneumatic, or electric actuator integration
  • Customer logo casting or marking
  • Third-party inspection and testing
  • Export-grade packaging
  • Engineering support for specific applications

Customizable Options

Body Materials

  • Stainless Steel 304 / 316
  • Carbon Steel
  • Brass
  • Alloy Steel

Disc / Trim Materials

  • Stainless Steel
  • Alloy Steel
  • Hardfaced Steel

Seat Materials

  • Metal Seat
  • PTFE, NBR, EPDM Soft Seat

Operation

  • Manual Handwheel
  • Pneumatic Actuator
  • Electric Actuator

Optional Features

  • Limit Switch / Position Indicator
  • Anti-Corrosion Coating
  • Remote Monitoring Capability
  • High-Temperature / High-Pressure Adaptation

Certifications

Internal Thread Plunger Valves meet international quality and safety standards:

  • ISO 9001 Quality Management System
  • API 602 / API 623 Design Standards
  • API 598 Leakage and Testing Standard
  • CE Certification
  • PED 2014/68/EU
  • ISO 5208 Leakage Testing
  • NACE MR0175 / ISO 15156 Compliance
  • SGS / BV / TUV Third-Party Inspection Available

Internal thread plunger valve

 

Parameter Specification
Product Name Internal Thread Plunger Valve
Nominal Size DN8 – DN100 (¼" – 4")
Pressure Rating PN10 – PN63
Body Material Stainless Steel 304 / 316, Carbon Steel, Brass, Alloy Steel
Disc Material Stainless Steel, Alloy Steel, Hardfaced Steel
Seat Material Metal Seat / PTFE / NBR / EPDM
Connection Type Internal Thread (BSPT, NPT, ISO 7/1)
Operation Manual Handwheel / Pneumatic / Electric Actuator
Temperature Range -20°C to +200°C
Leakage Standard API 598
Design Standard API 602 / API 623 / ISO 14313
Applicable Media Water, Oil, Gas, Chemicals, Laboratory Fluids

Internal thread plunger valve

Chemical & Petrochemical Industry

Small-diameter chemical piping, corrosive fluid handling, laboratory connections.

Oil & Gas

Metering lines, sampling lines, and process piping.

Water Treatment

Process control, potable water, and wastewater pipelines.

Industrial Process Systems

Precision throttling and isolation in small pipeline networks.

Laboratory & Research Facilities

Safe and accurate flow control for experimental systems.

Material customization plan

Customized 316L stainless steel valves forGerman chemical enterprises. Resistant tostrong corrosion, suitable for their acidicmedium transportation systems, with aservice life extended to over 8 years.

Structural optimization design

For the Saudi desert project, the valve stemsealing structure was changed to a doublebellows design to address the leakage issuein the high-temperature and dustyenvironment, and it was highly recognizedby the customers.

Interface standard adaptation

Customized API 600 standard valves for acertain company in the United States. Theflange size is fully compatible with ANSIB16.5, ensuring zero error during on-siteinstallation and reducing the constructionperiod by 30%.

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