The latest addition to our reciprocating pump component family is the WG Sphera series of stem-
guided, single or dual spring assisted, and caged metal spherical suction and discharge pump
valves. With its inception beginning on a wine glass napkin, the WG Sphera series valve has
evolved into Triangle Pump Components most flexible valve for a wide variety of different
applications ranging from clean to abrasive environments.

It has been shown that a spherical valve design reduces disruptions to fluid flow as well as fluid turbulence.

TPCI’s WG Sphera series valve is a stem-guided design which increases the stability of the valve member while the pump is in operation. Stability of the valve member is further improved by applying the spring pressure over a larger area to reduce variation in the positioning movement of the valve member during operation.

The result is a consistent and full opening of the valve with absolute minimal inhibition of fluid direction, fluid velocity, and fluid volume when compared to non-stem guided designs. This smoother and consistent rate of flow results in a reduction of pump vibration and power-end wear. Power-end parts are considerably more expensive than the fluid-end and are a lot more difficult to replace. By easing the flow of fluid through the valves, there is less resistance into the power-end thus reducing wear on the bearings, crankshaft, and connecting rods. An additional benefit is the lessening of power consumption costs (electricity).  View the technical paper here.

Our standard WG Sphera series spherical valve is offered in 316 stainless steel or 17-4 hardened stainless steel (other metals upon request), one or two Inconel 600 springs, a 316SS cage, and valve members with or without inserts. The use of Inconel 600 springs results in a product that will function properly and longer than an equivalent valve that uses 316 stainless steel springs. Our three spring offerings are:

  • Single light spring for low NPSH conditions
  • Single stronger spring for normal conditions
  • Dual springs for high RPM conditions

Highly customizable to meet your requirements, each component of the WG Sphera series valve is available individually. These valves are priced similar to our existing Resista™ AR valves with the same level of quality that you have come to expect from the TPCI brand.

At Triangle Pump Components Inc., we handle high and low volume orders, prototyping, and specialty production. In addition to these capabilities, we offer CAD design and CAM programming services to reverse engineer and manufacture parts for our customers.

For more information regarding our WG Sphera series pump valves, please view the technical
paper or contact us» directly.