Product Name

Graduated Handle

Category

Product Summary

Turn Your Ball Valve into a Control Valve.

The Graduated Handle (or Flow Control Handle) is a specialized accessory that transforms a standard on/off ball valve into a flow-regulating device. Featuring a scale plate with marked increments (0° to 90°) and a locking mechanism, it allows the operator to set the valve at specific opening angles to achieve a desired flow rate.

Product Description

Standard ball valves are designed for “all or nothing” flow. However, with this 304 Stainless Steel accessory, you can manually throttle the flow. The handle features a spring-loaded locking pin that engages with holes or notches on the graduated plate. This ensures that once you set the flow to “50%” or “30 degrees,” vibration from the pipeline won’t shift the valve position.

Key Technical Specifications

  • Material: ASTM 304 Stainless Steel

  • Scale: 0 to 90 degrees (often in 10-degree increments)

  • Mechanism: Spring-loaded locking pin

  • Compatibility: Fits most standard manual ball valves

Advantages & Benefits

  • Flow Regulation: Allows for manual balancing of flow rates in a system.

  • Repeatability: Operators can easily return the valve to a specific, known setting (e.g., “Set to notch 3”).

  • Stability: The locking mechanism prevents the flow pressure from pushing the valve open or closed.

  • Cost-Effective: A much cheaper alternative to automated control valves for simple throttling needs.

Application Fields & Locations

  • HVAC Balancing: Regulating hot/cold water flow to coils.

  • Mixing Lines: Manually setting the ratio of two mixing fluids.

  • Process Control: Setting a constant flow rate for filling or cooling.

Sample Policy

We are happy to provide product samples for customers to evaluate quality or conduct testing. The process typically begins with a quotation based on the customer’s specifications.

If the pricing is acceptable, we can offer samples either free of charge or at a cost depending on the product type and availability.
Shipping fees are borne by the customer.

Order Process

After confirming the product requirements and other details with the customer, we will issue a Sales Confirmation for approval. Once confirmed, the customer is required to pay a 30% deposit to proceed with production.

When mass production is completed and the goods pass inspection, the customer must pay the remaining 70% balance before shipment is arranged.

Related Products

FAQ

Please provide a detailed inquiry sheet including product specifications, materials, quantities, and any special requirements. We will offer a quotation based on your request.

Our quotations are typically based on FOB terms. However, we can also offer CFR, CIF, or other Incoterms upon request.

We operate on a made-to-order basis and do not hold stock.
Our standard MOQ is USD 15,000. Depending on the order composition, we may offer flexibility in certain cases.

By T/T – 30% down payment upon order confirmation, and 70% balance before shipment.

Our general lead time ranges from 30 to 45 days, depending on the order complexity and production schedule.
For more complex orders or during peak seasons, it may extend to 60–90 days.

Want to know more?

If you’re interested in any of our products or services, simply fill out the form below. Our team will get in touch with you as soon as possible to provide the information you need.

Request a Quote
Scroll to Top