Return Pin Valve

brass cartridge 0983b
brass cartridge 0983c
brass cartridge 0983d
brass cartridge 0983a

Parameters of Return Pin Valve

Return Pin Valve Core for UFH M30x1.5

This brass return pin valve core for underfloor heating (UFH) is a critical flow control component engineered specifically for the return branches of low-temperature hot-water floor radiant heating systems. Crafted with a brass body paired with a metal pin assembly, its metal core uses thermal expansion to precisely adjust the return line’s flow gap. This action accurately regulates the UFH return water flow rate. Enabling balanced temperature distribution across the entire underfloor heating system. Purpose-built for UFH return valves. It serves as a key component for maintaining consistent floor heating temperature equilibrium.

  • Model No.: JX-0983
  • Material: Brass
  • Finish: Original
  • With a thread size of M30x1.5
  • Medium: Water
  • Compatible with UFH actuators, featuring reliable assembly to ensure stable system operation
  • OEM and ODM are both welcome
  • Our free sample within 7 days.
  • ACS, ISO9001, CE
  • BSP/ISO228, NPT
  • This product is suitable for underfloor heating (UFH) systems, covering fluid control, equipment compatibility, and manifold regulation, and is compatible with HVAC engineering and equipment supporting applications.

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Description

Swing Non-return Check Valve DN25 0618c Swing Non-Return Check Valve

This brass swing non-return check valve is a specialized one-way flow control fitting engineered for fluid pipeline systems. Crafted from brass, it features an internal swing disc mechanism. When fluid flows in the forward direction, the disc is pushed open smoothly to allow unobstructed passage. In the event of reverse flow, the disc closes automatically—forming a tight seal to prevent backflow effectively. Ideal for medium and low-pressure fluid applications, it is a staple safety accessory for pipeline systems.

  • Model No.: JX-0618
  • Size: 1/2″-2″
  • Pressure rating: 125-200PSI
  • Finish: Sand blasted
  • Working temperature: -20-110℃
  • Material: brass, bronze, lead-free brass
  • Certification: ACS, NF, CSA
  • Medium: water
  • Connection: Sweat/ Solder Joint Ends
  • Disc Material: Lead-free Disc
  • Swing check valves are used in solar systems. Non-return water(heat-induced flow from the hot water tank/heating manifold system exchanger with 7/24). It keeps the hot water in the tank within 24 hours when the upper part of the loop gets cold.
 

Brass Needle Valve Inside Structure 0221c

 Brass Needle Valve 

This brass needle valve is a specialized precision flow control valve engineered for fluid pipeline systems. It features a needle-type valve core. Rotating the top-mounted, non-slip textured knob allows for precise adjustment of the clearance between the valve core and seat. Enabling fine-tuned control of low flow rates. Its precision needle structure is specifically designed to meet the demands of small-flow regulation scenarios. Making it a staple component for accurate pipeline flow management.

  • Model No.: JX-0221
  • Size:1/4″, 3/8″
  • Material: C37000, CW602N, Hpb59-1,C46500
  • Finish: Original brass finish
  • Medium: Water
  • Cartridge: brass
  • Working pressure: 20bar,25bar
  • Working temperature: -10-100℃
  • OEM and ODM are both welcome
  • Lifetime: 10 years of working.
  • The flow is effective in any direction.
 

Brass Water Stop Valve

 Brass Stop Valve

This brass stop valve is a specialized on-off control valve engineered for residential piping systems. It features a robust brass body paired with a chrome-plated cross-shaped operating handle. Rotating the top-mounted cross handle drives the internal valve core to move vertically, enabling full on-off control and precise flow regulation of the pipeline. It is a staple fitting for household water supply lines.

  • Model No.: JX-0850
  • Size: 1/2″
  • Body Material: Brass with sandblasted
  • Connection: NPT, BSP, ISO228
  • Medium: Water
  • Pressure rating: PN16
  • Working Temperature: -5-115℃
  • Handle Surface Treatment: Zinc alloy with chrome-plated cross handle
  • Certification: ACS, ISO, SGS, NF
  • Quarter Turn: A full-turn cartridge valve provides a more effortless shut-off, open, and close, saving water.
Brass valve refrigerant dispenser with adapter Tank Valve Refrigerant Dispenser With Adapter

This tank valve refrigerant dispenser with adapter is a special charging tool. It’s made for refrigeration and air conditioning systems. Equipped with an ergonomic control handle, it allows precise on-off control of refrigerant flow directly from the cylinder. This ensures safe and accurate charging. The built-in brass adapter fits refrigerant tank ports of different specs. It’s an essential professional tool for efficient refrigeration servicing and maintenance.

  • Model No.: JX-0217
  • Size 1/2″, 3/8″
  • Connection: BSP, NPT, BSTP
  • Finish: Nickel-plated
  • Material: C37700, CW602N, H58-3
  • Handle: Zinc alloy
  • Working temperature: -10-100℃
  • Medium: Water
  • Pressure rating: 12bar
  • Certification: ACS, ISO, NF
  • Stem: Brass
  • Cartiage: Brass, lead-free
 

Brass valve Angle type 3/4

 3/4 Brass Boiler Drain Valve

This brass boiler drain valve is a specialized fitting engineered for draining and blowdown operations in boiler systems. Featuring a 90° elbow design, it is precisely sized to fit standard boiler pipeline drain connections. Making it easy to remove stagnant water and accumulated debris from the boiler. A top-mounted red handwheel enables manual rotation to control the vertical movement of the internal valve core, allowing for full on-off control of the pipeline. As a critical accessory, it is essential for the routine maintenance of boiler systems.

  • Model No.: JX-0848
  • Size: 3/4″
  • Material: Brass
  • Working temperature: -10-80℃
  • Valve turn type: Multi-turn
  • Connection: MIPxMHT
  • For non-drinking water
  • Rising stem, six-point cast-iron handle
  • Handle: Iron handle with red plastic cover
  • Pressure rating: 10bar
  • Mdia: Water
  • Certification: ACS, NF
Air Vent Valve with Brass Finish

 

Brass Automatic Air Vent Valve

This brass automatic air vent valve is a special automatic air release fitting. It’s used for fluid pipeline systems. It has a float and spool mechanism inside. The spool closes automatically. No fluid leaks out. It’s a purpose-made accessory. It helps keep fluid flowing smoothly in pipeline systems, making the system work better.

  • Model No.: JX-0753
  • Temperature adjustment: 0-150℃
  • Size: 1/2″
  • Body material: Brass
  • Simple structure, lightweight
  • Easy to open and close
  • Application: Outdoor, Hotel, Household, Gas Cooker
  • Flow Direction: One Direction
  • Transport Package: Brown Cartons and Pallets
  • Media: Air
  • Connection: BSP/ISO228, NPT
  • Finish: Sand blasted
  • Working Pressure: 30bar

FAQs of Return Pin Valve

1. Which industries and work environments are return pin valves suitable for?

It is used in construction machinery, agricultural machinery, industrial hydraulic equipment, and automated production lines. It can withstand working temperatures from -20℃ to 120℃. It works with common media like mineral oil and fire-resistant hydraulic oil.

2. What is the core function of a return pin valve?

Its core function is to control the reverse flow of fluid in hydraulic/pneumatic systems, and ensure the precise reset of the valve core through the return pin structure, thus maintaining system pressure stability and the reliable operation of actuators (such as cylinders and oil cylinders).

3. How to replace the return pin valve?

From The OCD Repairman

First, turn off the water and power. Then drain the system.
Take apart the valve body next—remove the head/actuator, bonnet, and diaphragm. Install the new parts. Put everything back together.
You’ll usually need tools like wrenches and pliers. Different valves have specific steps:
Radiator valves: Free up the pin.
UFH valves: Handle the manifold pin.
Saddle valves: Do the piercing step.
HVAC valves: Work on the actuator.
Remember: Always turn off water and power first. Drain the pressure. After reassembly, test for leaks.

4. How to Select the Right Return Valve?

Different scenarios have distinct requirements for valve functions—first, confirm the application scenario, such as underfloor heating systems, central air conditioning, boiler systems, potable water supply, or industrial fluid transportation. Heating systems need to work with actuators for good flow control. Potable water systems must use food-grade materials. Check the system’s operating pressure and temperature range first. Choose a valve with the right pressure and temperature ratings.

5. How does the compatibility of the return pin valve reduce inventory complexity?

Universal Interfaces: Full Compatibility
Plumberstar return pin valves use global thread standards (NPT, BSPP, BSPT) and common caliber series (DN15/DN20/DN25/DN32, etc.). Interface sizes and thread precision strictly follow EN, ANSI, and ISO international standards. Tolerance is controlled within ±0.02mm.
This means one size of needle check valve can directly fit copper, stainless steel, PPR, and other branded fittings with the same interface standard. No need to stock separate valves for different pipelines. It cuts down your SKU count a lot.
Wide Working Condition Adaptability: Cut Special Model Inventory
The product’s rated pressure ranges from 0.1 to 2.5MPa. Temperature tolerance is -20℃ to 120℃. Seals use EPDM/PTFE composite materials (customizable). It works with water, gas, hot water, weak acids, weak alkali, and other media.
The same model meets the needs of different scenarios. There is no need to stock special models for high temperatures, high pressures, special media, and other working conditions. It streamlines your inventory further.

6. What packaging method do you use for return pin valves?

We use corrugated cartons with shockproof foam liners, providing independent protection for key components, such as valve cores and seals.

7. What is the MOQ for the return pin valve?

Our MOQ is 2000 units. We have flexible purchasing terms for new OEM/ODM partners or trial orders. You can adjust the MOQ between 200 and 300 units. Just tell us your specific needs.

8. Is a warranty provided for this return pin valve?

We offer a 3-year warranty covering material defects and manufacturing inconsistencies, excluding damages from human error, improper installation, or misuse.

9. Can third-party inspections be done for return pin valves?

Full Coverage of Testing Types
Plumberstar manufatory cover all kinds of tests: raw material inspection (spectrum analysis, hardness test), size tolerance inspection (CNC coordinate measurement), pressure/air tightness test (1.5 times rated pressure and leakage detection), flow/check performance test, temperature/corrosion resistance test, environmental compliance inspection (tests related to RoHS, NSF/ANSI 61 certification).
We also do batch sampling inspections and factory full inspection reviews. We can arrange customer site witness inspections as required.
Compatible with Authoritative Testing Organizations
We can work with all mainstream global third-party testing organizations, like SGS, BV, Intertek, TÜV Rheinland, and UL. We also support qualified testing organizations designated by customers.
Testing standards can be chosen based on your needs. You can pick international/national standards like ISO, EN, ANSI, GB. Or we can follow the technical agreement signed by both parties.

Plumberstar Factory profile
Plumberstar Factory

10. What’s the typical delivery time for return pin valve international shipping?

Most orders come with a 30 working-day lead time. However, we do have expedited services available – for an additional cost, we can reduce the production time for rush orders to 15 working days and will book the fastest available flights and shipments. Specific fees can be discussed.

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