Van Cổng UPVC & CPVC (SPEARS) - hàng có sẵn

Van Cổng UPVC & CPVC (SPEARS) - hàng có sẵn

Gate valves perform an on/off function accomplished by means of a flow-controlling gate centered in the valve body between the inlet and outlet sides of the valve. The gate moves along a vertical stem axis, perpendicular to the fluid stream, thereby blocking the flow in the closed position and variably increasing the flow as the gate is moved to the full open position. Spears® gate valves use either a cylindrical plug (Plug Gate Valves) or a wedge-shaped gate and sealing surface design (regular Gate Valves). Both provide positive shut off when engaged with the valve body in the closed position and feature non-rising type stem. This provides vertical movement of the gate without extension of the stem above the valve body.

This solid, proven design is well suited for a variety of chemical, industrial and irrigation applications. Spears® Gate Valves are feature-packed with a variety of end connector options. Individual special features are found in each size range 1/2" through 2", 2-1/2" & 3", and in the full featured Heavy Industrial 4" valve. See Spears® Plug Gate Valves for 6" size.

Heavy Bodied PVC & CPVC Construction

Tapered Wedge with Specially Designed Sealing Surface

Non-Rising Stem Design

Patented Strain-Equalizing Stem/Wedge Thread

O-ring Stem Seals Instead of Packing - No Retightening Required

Buna-N, EPDM, or FKM O-ring Seals

Positive Grip, High Impact Polypropylene Handwheel Operator

Fully Serviceable, Replaceable Components – Accessible Without Valve Removal

EPDM Gate Valves NSF® Certified for Potable Water use

Suitable for Vacuum Service

Assembled with Silicone-Free, Water Soluble Lubricants


Metric Socket and BSP Thread Available, 1/2" - 2"

Spears gate valve 1

Spears gate valve 2

Spears gate valve 3

Thông số kỹ thuật

All thermoplastic Gate Valves shall be constructed from PVC Type I Cell Classification 12454 or CPVC Type IV Cell Classification 23447. All O-rings shall be Buna-N, EPDM or FKM. All EPDM valves shall be NSF® certified for potable water use. All valves shall have non-rising stem and Polypropylene handwheel. All valve gate wedges shall have Strain-Equalizing threads. PVC valves shall have Polypropylene wedge and CPVC valves shall have CPVC wedge. All valve components shall be replaceable. All 1/2" through 2" valves shall be pressure rated at 200 psi, all 2-1/2" through 3" and all flanged valves shall be pressure rated at 150 psi, and all 4" valves shall be pressure rated at 235 psi for water at 73°F, as manufactured by Spears® Manufacturing Company.