← Prev   |   Next →

Flow regulator (Dole valve), FNPT, 1.0 to 30 GPM with Buna orifice

The Flow Regulator (Dole valve) is designed to deliver a constant volume of water flow over a wide pressure drop range. The constant flow of water is maintained by the use of the flexible orifice. The flow rate is maintained to within ± 15% between 15 and 125 psi. The flow rate varies due to manufacturing tolerances and water temperature. We manufacture flow regulators in various materials such as Nickel Plated Brass, Type 316 SS, and PVC. Flow Regulators come in various flow rates and are 3/8”, ½”, ¾”, 1” FNPT, and 1 ¼”, 1 ½”, 2”, 2 ½”, and 3” MNPT and flow rates range from 0.5 to 120 Gallon per minute (GPM). We also use labels that provide extra-strong protection for harsh environments and conditions. They are constructed from durable polyester that is water resistant and tear resistant providing durable and secure protection. All Flow Regulators are marked with an arrow indicating direction of flow. To ensure proper operation, always install regulator with the arrow pointed downstream.

  • Cooling towers
  • Water softeners
  • Tankless heaters
  • Water filters
  • Ground water heat pumps
  • Irrigation systems
  • Pumps (well and packing water)
  • Drinking fountains
  • Water purifiers
  • PVC, stainless steel, lead free nickel plated brass
  • Sizes: 3/8”, ½”, ¾”, 1”, 1 ¼”, 1 ½”, 2, 2 ½”, 3”, NPT
  • Rubber orifice: Buna, Viton, EPDM
  • Custom connections, materials and sizes available
  • Lead free (LF) (sizes 1" and smaller)

Customer Reviews

Based on 2 reviews Write a review

Related Items

Customer Reviews
4.8 Based on 4 Reviews
Write a Review

Thank you for submitting a review!

Your input is very much appreciated. Share it with your friends so they can enjoy it too!

Filter Reviews:
United States United States
Dole Flow Regulator

Great, prompt service as always from Yamatho. 1 gpm and 2 gpm Dole FR work great, provide consistent accurate water flow. Would recommend installing a banjo screen filter to protect orifice from plugging.

United States United States
Dole valve that works as expected

We needed to figure out how to properly split our 85 GPM flow rate unevenly over 4 fields and were pleasently surprise with these valves. These sork like a charm. Would highly recommend.

Wally S.
Quick shipping

These flow regulators work. As long as you work them as specified, they deliver. The service was fast and price very reasonable.

John W.
High quality

Easy to order and high quality product