A COMPREHENSIVE RANGE OF VALVES & AUTOMATION SOLUTIONS.
Stafford offers a various type, material, size ranges of valves. Stafford also recognised manufacturer of
special alloy meterial valves and non standard special valves. Stafford valves are being manufactured and tested in compliance with international standards including
ANSI, API, BS EN ISO, DIN, IS, ASME etc.,
RANGE OF PRODUCTS:
BUTTERFLY VALVES*
Types: Wafer / Lugged Wafer / Double Flanged
Size Range: 2"(50NB) to 64" (1600NB)
Pressure Rating: PN 3.5, PN10, PN16 & #150
BUTTERFLY DAMPERS
Types: Short Wafer / Double Flanged
Size Range: 2"(50NB) to 96" (2400NB)
WAFER CHECK VALVES
Types: Wafer
Size Range: 2"(50NB) to 48" (1200NB)
Pressure Rating: PN 3.5, PN10, PN16 & #150
*STANDARDS OF COMPLIANCE
Design Standard: API609 / Bs En 593
Testing Standard: API 598 / Bs En 12266-1, Bs En 12266-2
Mounting Standard: ISO 5211 / Various
AUTOMATED VALVES - BY PNEUMATIC & MOTORISED OPERATION - BUTTERFLY VALVES
TOP AUTOMATION SOLUTIONS FOR SPECIAL VALVES.
STAFFORD BUTTERFLY VALVES AT GLANCE
Body materials in Cast Iron, Ductile Iron, Carbon Steel, Stainless Steels, Al. Bronze and other
exotic alloys.
Disc material options in Ductile Iron with Nylon-PA12 coating, Ductile Iron with Aroxy coating, Stainless Steels, Al. Bronze and other exotic alloys.
Low-pressure designs, for low differential pressure or vacuum applications.
Seat material options in EPDM, Nitrile, Viton, Silicone, Hypalon.
SALIENT FEATURES OF OUR BUTTERFLY VALVES
Resilient seated Butterfly vales, bi-directional.
Can direct mount actuators, gear operators.
One-piece stem supports the disc across the entire length. Disc + Stem engagement by a precision machined double “D”. Positive engagement for disc rotation. No shearing of taper pins.
“Primary Sealing” achieved by precision radius machined on the disc hub, pressing into the seat, “Secondary Sealing” by two molded “O” rings in the seat journal, compressing against the valve stem. “Tertiary Sealing” achieved by the bi-directional double “U” cup seal at the stem top. Positive sealing against fugitive emissions and vacuum applications.
Rigid-backed elastomer seat easily field-replacable, heavy-duty square grooved design ensures rigid locking of seat in body, prevents seat movement Replaceable seat, bringing down maintenance costs.
Unique stem retention design facilitates the “easiest” assembly and disassembly of valve on site for maintenance purposes. No damage to disc, seat or stem, as in other stem retention designs, “Blow-out proof” design to ensure no accidental stem push-out takes place under pressure.
Available with a variety of pneumatic, electric and hydraulic actuation.
