Bray – Unidirectional Knife Gate Valve – Series 950
Knife Gate Valves
Bray - Unidirectional Knife Gate Valve - Series 950

Durable Unidirectional Valves for Heavy-Duty Industrial Needs

The Knife Gate Valve Series 950 unidirectional are designed with a single-piece, cast body design housed within a cost-effective semi-lug body.With integral metal or replaceable soft seats, configuration can be tailored to specific application requirements. This customizable feature ensures that the valve seamlessly adapts to different operating conditions, from wastewater treatment plants to mining operations, pulp & paper facilities, and the food & beverage industry.Adhering to the highest quality standards, each Series 950 Knife Gate Valve undergoes rigorous testing, including shell and seat tests per MSS SP-151, as well as factory cycle tests. Pressure ratings for our products include Uni-Directional specifications, with 2" – 12" at 150 psi (DI body), 14" – 24" at 75 psi (DI body), and 2" – 24" at 150 psi (steel body).Our approvals and certifications encompass CRN, PED – Category I Module A, and AWWA C520 compliance. Explore optional features like Gate Guards, Deflection Cone, Open/Closed Lockouts, Limit Switches, Solenoid Valves, and Fail-Safe Systems for enhanced functionality.

Size Range
NPS 2 to 24 / DN 50 to 600
Body MaterialsCarbon Steel (WCB), CF8 Stainless Steel, CF8M Stainless Steel, CF3M Stainless Steel, SAF 2205, SAF 2507
Maximum Allowable Operating PressureNPS 2 to 12: 150psi / DN 50 to 300: 10bar
NPS 14 to 24: 75psi / DN 350 to 600: 5bar
Stem Materials304 Stainless Steel
Body StyleSingle Piece, Wafer, Semi-Lug
Gate Materials304, 316, 317 Stainless Steel, SAF 2507, SAF 2205, 17-4PH, Hastelloy® C, Monel®
Seat Material Temperature Range
Buna-N: -34 to 194°F (-36 to 90°C), EPDM: -65 to 248°F (-54 to 120°C) Viton®: -15 to 392°F (-26 to 200°C), PTFE/Viton Back-up Ring: -235 to 392°F (-148 to 200°C)
Design StandardMSS SP81
Packing Maximum TemperaturePTFE: 500°F (260°C), Impregnated PTFE: 450°F (232°C), PTFE/Buna-N: 194°F (90°C), PTFE/Viton®: 392°F (200°C), PTFE/EPDM: 248°F (120°C)
Testing StandardMSS SP151
CertificationsATEX, AWWA C520 (2019), CRN, PED, PE(S)R, TR CU, UA TR
Face to FaceMSS SP81
Actuator OptionsHandwheel, Bevel Gear, Pneumatic, Hydraulic, Electric
ApplicationsWastewater, Power, General Industrial, Chemical, Mining, Food & Beverage, Pulp & Paper