Flexible Seats,
for faster and better pumping.

Valve Seats on Air Operated Double Diaphragm Pumps

A diaphragm pump is driven by compressed air and uses reciprocating functions such as the valve seats and valve balls to pump the fluid. The design allows for self priming, large suction lift, and the ability to run dry without any damage to the pump. Both valve seats and valve balls are critical components for a proper function of an air operated double diaphragm pump.

Valve seats on Diaphragm pumps can be found in multiple industries like:

Seats to mee Specific Application needs

Every industry or solution has it own selection requirements if it comes to valve seat material. They come in a variety of materials (availability may vary per manufacturer) and designs to meet specific application needs such as chemical compatibility, temperature, abrasion resistance, and certification requirements.

Most common used materials supplied by Thinqk Pump Parts:

Neoprene: 
An excellent general purpose diaphragm for use in non-aggressive applications such as water-based slurries, well water or sea water. Exhibits excellent flex life and low cost.
Color Code: Green

Buna-N/Nitrile: 
Excellent for applications involving petroleum/oil-based fluids such as leaded gasolines, fuel oils, non-synthetic hydraulic oils, kerosene, turpentines and motor oils.
Color Code: Red

EPDM/Nordel: 
Excellent for use in applications requiring extremely cold temperatures. May also be used as a low cost alternative when pumping dilute acids or caustics.
Color Code: Blue

FKM/Viton:
Excellent for use in applications requiring extremely hot temperatures. May also be used with aggressive fluids such as aromatic or chlorinated hydrocarbons and highly aggressive acids. PTFE would normally be used with these aggressive fluids as its flex life is better than Viton®. However, in applications involving suction lift outside the range of PTFE, Viton® will be the preferred choice for highly aggressive fluids.
Color Code: Silver or White

Santoprene:
Excellent choice as a low cost alternative to PTFE in many acidic and caustic applications such as sodium hydroxide, sulfuric or hydrochloric acids. Exhibits excellent abrasion resistance and durability at a cost comparable to neoprene
Color Code: Cream (common color) Pump manufacturers intent to use brand specific color.

Hytrel:
Exhibits excellent abrasion resistance, flex life and durability. This material is FDA approved for food processing applications. An outstanding general purpose diaphragm as well.
Color Code: Cream (common color) Some brand use alternative color.

Geolast:
Excellent choice for applications requiring high oil resistance that meets or exceeds that of nitrile (Buna-N). This material exhibits exceptional performance for a variety of fluids.
Color Code: Black

PTFE:
Excellent choice when pumping highly aggressive fluids such as aromatic or chlorinated hydrocarbons, acids, caustics, ketones and acetates.
Color Code: white

Polypropylene:
Excellent choice for applications requiring the most versatile chemical resistance of the thermoplastic materials.
Color Code: white

PVDF:
Excellent choice for applications requiring the most versatile chemical resistance of the thermoplastic materials. No other solid thermoplastic material can approach the combined strength, working temperature, and chemical resistance characteristics of PVDF.
Color Code: white

Aluminum:
Excellent choice because it is Strong and lighter weight compared to other metals. Aluminum has average chemical resistance and is popular in paint, oil, gas and mining.

Stainless Steel:
Excellent chemical resistance and can be used for food processing applications because it’s easily cleaned and doesn’t corrode.

Hastelloy:
Extremely chemically resistant for a metal product, best choice to get but it’s very costly

Can we help you?

For questions on Valve Seats to service your Air Operated Double Diaphragm Pump please contact our Team of professionals at Thinqk Pump Parts. We are more than happy to assist you with your Valve Seat questions. 

To reduce your downtime we stock seats for major brands in multiple materials used in the Diaphragm Pump industry. Parts ship worldwide from our semi-automated warehouse in the Netherlands.

Thinqk Seats Pump Parts, original quality at a better price.