1. Valves Plumbing Building Materials For Sale
  2. sku: 22204533803457603
  3. SCHRADER BELLOWS 4M-V4LN-B

SCHRADER BELLOWS 4M-V4LN-B Parker Needle Valve Pipe Round 1/4 3000PSI Handle 11FB

4m-v4ln-b Schrader Bellows Parker Needle Valve 1/4 Inch Pipe Brass 3000psi Round Handle 11fb Tested

( Brand: Schrader Bellows ), ( Manufacturer Part Number: 4M-V4LN-B ), ( Part Type: Valve Pipe Handle ), ( Body Material: Brass ), ( Maximum Pressure: 3000 Psi ), ( Unit Type: Unit ), ( Valve Operation: Manual ), ( Country Of Origin: United States )

Review SCHRADER BELLOWS Parker Needle Valve 1/4 Inch Pipe Brass 3000psi Round Handle Tested

The **Schrader Bellows 4M-V4LN-B** is a premium, high-performance needle valve engineered by Parker Hannifin, a leader in fluid power and motion control solutions, designed for demanding applications requiring precision, durability, and reliability. This valve features a **1/4-inch pipe thread (NPT) connection**, ensuring seamless integration into hydraulic, pneumatic, or industrial systems where tight sealing and minimal leakage are critical. The **3000 psi working pressure rating** makes it ideal for high-pressure environments, including hydraulic systems, test stands, and specialized machinery where fluid control must withstand extreme pressures without compromising performance. The **round, ergonomic handle** provides intuitive, hands-free operation, allowing for smooth and precise flow adjustment with minimal effort, reducing operator fatigue in continuous use scenarios.

The valve s **bellows-sealed design** is a standout feature, offering superior protection against contamination, dust, and moisture infiltration, which is essential in harsh or unregulated environments. This sealing mechanism also enhances the valve s longevity by preventing abrasive particles from damaging internal components, thereby reducing maintenance requirements and downtime. The **needle valve mechanism** itself delivers exceptional throttling control, enabling fine-tuning of fluid flow rates with remarkable accuracy perfect for applications where precise regulation of pressure or flow is necessary, such as in hydraulic actuators, test rigs, or calibration systems.

Constructed from high-quality materials, including corrosion-resistant metals and durable elastomers, the **4M-V4LN-B** is built to endure prolonged use in both indoor and outdoor settings, including exposure to temperature fluctuations and aggressive fluids. Its compact yet robust design allows for easy installation in tight spaces, while the **11FB designation** (likely referring to a specific flow coefficient or body style) ensures compatibility with standard fittings and plumbing configurations. Whether deployed in industrial automation, research laboratories, or specialized manufacturing processes, this valve exemplifies Parker s commitment to engineering solutions that balance performance, reliability, and ease of use, making it an indispensable component for professionals who demand nothing less than excellence in fluid control.

### **Pros and Cons of buying a Schrader Bellows 4M-V4LN-B (Parker Needle Valve, 1/4" Pipe, 3000 PSI, Round Handle, 11FB)**

#### **Pros:**

1. **High Pressure Rating (3000 PSI)** Suitable for demanding applications requiring robust performance, such as hydraulic systems, gas cylinders, or high-pressure fluid control.

2. **Durable Construction** The bellows design provides leak resistance and protection against contamination, extending valve lifespan in harsh environments.

3. **Precision Control** Needle valves offer fine adjustment, making them ideal for applications requiring gradual flow modulation (e.g., laboratory setups, pneumatic systems).

4. **Compatibility with 1/4" Pipe Threads** Standardized sizing ensures easy integration with existing systems using NPT (National Pipe Thread) connections.

5. **Round Handle Design** Provides a more ergonomic and secure grip compared to lever-style valves, reducing accidental activation.

6. **Brand Reputation (Parker)** Parker Hannifin is a trusted manufacturer in fluid control, ensuring reliability and after-sales support.

7. **Sealing Performance** The bellows design minimizes internal leakage, which is critical in high-pressure or high-purity applications.

8. **Versatile Applications** Works well in hydraulic, pneumatic, and gas systems, making it a flexible choice for various industries.

#### **Cons:**

1. **Higher Cost** Compared to standard ball or globe valves, needle valves (especially high-pressure models) tend to be more expensive due to precision engineering.

2. **Limited Flow Capacity** Needle valves are designed for throttling rather than full-flow applications, which may restrict their use in high-volume systems.

3. **Maintenance Sensitivity** The internal needle mechanism can wear over time, requiring periodic maintenance or replacement of seals.

4. **Potential for Clogging** Fine adjustments can trap debris if the fluid contains particulates, necessitating filtration upstream.

5. **Specialized Installation** May require proper alignment and sealing techniques to prevent leaks, especially in high-pressure setups.

6. **Limited Availability of Spare Parts** Some specialized components (e.g., seals, needles) may not be easily replaceable if the manufacturer is discontinued.

---

### **Conclusion:**

The **Schrader Bellows 4M-V4LN-B** is a high-quality, precision-engineered needle valve ideal for applications demanding **fine flow control, high-pressure resistance, and contamination protection**. Its **durability, Parker brand reliability, and compatibility with standard piping** make it a strong choice for industrial, hydraulic, or pneumatic systems where accuracy is critical.

However, its **higher cost, limited flow capacity, and maintenance requirements** may not justify its purchase for **low-pressure, high-volume, or cost-sensitive applications**. If budget is a concern, alternatives like **standard ball valves or globe valves** might suffice for simpler systems.

### **Recommendation:**

- **Buy if:** You need a **high-pressure, precise, and leak-resistant valve** for specialized applications (e.g., hydraulic testing, gas control, or laboratory setups).

- **Avoid if:** You require **high flow rates, frequent full-open/close cycles, or a budget-friendly solution** consider a **ball valve or globe valve** instead.

- **Consider alternatives:** If maintenance is a concern, explore **self-cleaning or diaphragm-style valves** for cleaner environments.

For most **industrial or high-reliability applications**, this valve is a **solid investment** given its performance and longevity. Ensure proper installation and regular maintenance to maximize its service life.

Details:

The Parker 4M-V4LN-B Needle Valve is a high-quality brass valve designed for precise control of hydraulic or pneumatic systems. Made in the USA by SCHRADER BELLOWS, this needle valve features a round handle for easy operation and is suitable use with 1/4 pipes. With a maximum pressure rating of 3000 psi, this manual valve is durable and reliable for variety industrial applications.

part #: 4mv4ln prices

  • $13.75-$44.99

specifications valvesplumbing:

  • brand: Schrader Bellows
  • mpn: 4m-v4ln-b
  • part type: Valve Pipe Handle
  • body material: Brass
  • maximum pressure: 3000 Psi
  • unit type: Unit
  • valve operation: Manual
  • country of origin: United States

shipping valvesplumbing:

  • cost: $0.00
  • type: Fixed
  • class: Standard
  • carrier: USPS
  • service: USPS Ground Advantage
  • transit: 7-14 Days

payments valvesplumbing:

  • credit card: Discover
  • other
  • wallet: Paypal

offer valvesplumbing:

  • sold: 0
  • options: Ship-to-home
  • best offers: True
  • quantity: 1
  • started: February 6, 2026
  • availability: In Stock

seller valvesplumbing:

  • # reviews: 547
  • rating: 99.6%
  • city: Ringgold, Georgia

general valvesplumbing:

  • Hydraulics, Pneumatics, Pumps Plumbing > Valves Manifolds > Needle Valves
  • condition: Used

returns valvesplumbing:

  • paid by: Seller
  • method: Money back
  • time: 30 Days
  • policy: Returns Accepted
part type: valve pipe handle, body material: brass, maximum pressure: 3000 psi, unit type: unit, valve operation: manual, country of origin: united states,
category: business & industrial > hydraulics, pneumatics, pumps plumbing > valves manifolds > needle valves, sku: 22204533803457603,
Schrader Bellows 4M-V4LN Is Similar To:
valvesplumbing logo
2 offers $13.75–$44.99 USD
  • Used. Offer #1 priced at $44.99 + $0.00 shipping estimate = $44.99* total. Made in the United States by SCHRADER BELLOWS, this needle valve features a round handle for easy operation and is suitable for use with 1/4" pipes.FREE SHIPPING
  • New. Offer #2 priced at $13.75 + $0.00 shipping estimate = $13.75* total. Notes: A/C Schrader Valve Cap - R134A Cap - Blue - Low Side 2006-2014 Volkswagen GTI.FREE SHIPPING

Copyright © valvesplumbing.com