Tescom 26-2500 Series

TESCOM 26-2500 Series has a Cv=5.0 for high flow backpressure applications. Large Gylon® diaphragm provides excellent sensitivity and minimal crack to reseat pressure differential. Ideal for use in pump discharge pressure control applications.

Features & Benefits

  • High flow capacity
  • Close pressure differential between crack and reseat
  • Bubble-tight shutoff at all reseating pressures
  • Large Gylon® diaphragm provides maximum sensitivity
  • Dome loaded and air actuated options available
  • Four control pressure ranges


Pressure Rating

Controlled Pressure Ranges
0-20, 0-50, 0-125, 0-200 PSIG [0-1.4, 0-3.5, 0-8.6, 0-14 bar]
0-300 PSIG [20 bar] (for Air Load)



Body, Bonnet, Back Cap: 316 Stainless Steel or Brass
Main Valve Seat: Buna-N, Ethylene Propylene, Chemraz® or Viton®
Diaphragm: Gylon®
O-rings: Buna-N, Ethylene Propylene, Chemraz® or Viton®
Remaining Parts: 300 Series Stainless Steel, Nitronic 60


Operating Temperature

-20°F to +165°F [-29°C to +74°C]


Port Size & Type

Inlet & Outlet Port Type: SAE, NPT, MS33649
Inlet & Outlet Port Size: 1/2″, 3/4″, 1″


Flow Capacity

Cv = 5.0


Load Type

Spring, Air Actuated, Dome



Stainless Steel: 15 lbs. [6.8 kg]
Brass: 16 lbs. [7.3 kg]