Why Choose Hydro Instruments?

Ten Reasons to Choose Hydro Instruments' Products

  1. Hydro Instruments is an ISO 9001:2008 certified company that has been manufacturing gas chlorination equipment since 1978 and is an associate member of The Chlorine Institute since May 7th, 2015. Only the best raw materials are used for our parts, chosen for strength and chemical resistance. Materials include Silver, PVC, Teflon, Kynar, Tantalloy (a tantalum-tungsten alloy), Hastelloy C, and Viton.

  2. Hydro Instruments' warranty is the best on the market. Our mechanical equipment carries a 3-Year warranty with a lifetime warranty on inlet springs, the vacuum regulator main diaphragm, machined PVC bodies and inlet capsule. We will match any written warranty claim by any competitor. We produce equipment to be the most durable on the market and we stand behind our equipment with this excellent warranty. (Electronic equipment carries a 1-Year warranty)
  3. Hydro Instruments keeps all parts and most systems in stock. When you need a part, component, or new system you can be sure that Hydro will act quickly. Most orders ship the same day and all (but orders of large quantities) can ship by the next business day. We never charge expediting fees. This is the way we have done business since 1978.

  4. Hydro Instruments' designs permit easy repairs and replacement parts when needed. We are constantly improving and upgrading our design to improve product performance. In addition, we work hard to offer the most competitive spare parts prices.

    We also offer a competitively priced, high quality factory rebuild and testing service with an average turn around time of two business days. All factory rebuilds are warranteed for one year.


    Please click image to enlarge

  5. Hydro Instruments manufactures its Vacuum Regulator body parts by machining them from solid blocks of PVC stock, rather than injection molding of molten plastic.


    Machining is more expensive, but it eliminates the residual stresses from the molding process that lead to cracking and warping. The machining process also allows our body parts to maintain a much heavier wall thickness than that allowed by injection molding. These Vacuum Regulators will not crack or warp.  Please click image to enlarge.

  6. The Hydro Instruments' rate valve stems and seats are precision-machined from the finest materials available for each intended chemical use. This ensures the operator's ability to accurately control the feed rate over a lengthy period of time.

  7. The Hydro Instruments' ejector bodies are also constructed of machined PVC, not injection molded. 

    This again allows a heavier wall thickness to avoid cracking and warping.

    Ejectors are available for back pressures up to 300 psi.


    Please click image to enlarge 

  8. Hydro Instruments' offers a variety of Ejector check valve designs. We offer a unique self centering O-Ring seal, flat gasket seal, flat o-ring seal, ball-type and diaphragmless designs.

  9. The Hydro Instruments' main diaphragm is double o-ring sealed on the inner and outer circumference. This method guarantees a positive seal that will not allow any air to leak into the system.

  10. The Hydro Instruments' tantalum alloy springs have a lifetime warranty. We have never had a spring failure 

Toll Free (US & Canada)
(888) 38-HYDRO
(888) 384-9376