Sanco Gate valves are the most commonly used shutoff valve in the industry today. They are used where minimum pressure drop and bi-directional on-off service is required. Sanco Gate valves are not designed for throttling service.

Prolonged use in the partially open position will generally damage seating surfaces. Gate valves are available with a number of wedge configurations (solid, flexible and split) to best meet the specific service conditions.

Description

Sanco Gate valves normally are handwheel operated, but are also available with gearing, electric motor actuators, or cylinder (pneumatic or hydraulic) actuators for remote operation. See Actuators and Accessories section for more detail.
Type And Size
Select the best type of valve for the intended service (gate, check, etc.). Sanco Gate and Globe valves are available with a selection of wedge or disc configurations for different services. Sanco Valves may be sized to match existing lines, but swing check and stop-check valves should also be sized according to flow conditions for maximum service life.
Ratings
Sanco Valves must only be used in operating conditions within the appropriate ANSI pressure-temperature ratings for valve class rating and body/bonnet material (see Technical Data section).
Temperature Limitations
Sanco Valves Only use valves within the temperature limitations of their construction. Temperature limitations of body/bonnet materials, trim, bolting, packing and gaskets must all be considered. Special construction for extended service temperatures are available on application.
Material And Service
Sanco Cast steel bolted bonnet valves are available in a variety of body/bonnet materials and trims. General service recommendations for body/bonnet materials appear on page 32 and for trims on page 33. Specified materials should be compatible with the service.

Material Details

Part Name Material Option
Body ASTM A 216 WCB / A 217 WC6 / A 217 WC9 / A 217 C5 / A 217 C12 / A 351 CF8 / A 351 CF8M / A 351 CF3 / A 351 CF3M / A 352 LCB
Bonnet ASTM A 216 WCB / A 217 WC6 / A 217 WC9 / A 217 C5 / A 217 C12 / A 351 CF8 / A 351 CF8M / A 351 CF3 / A 351 CF3M / A 352 LCB
Wedge @ ASTM A 216 WCB / A 217 WC6 / A 217 WC9 / A 217 C5 / A 217 C12 / A 351 CF8 / A 351 CF8M / A 351 CF3 / A 351 CF3M / A 352 LCB
Stem ASTM A 276 410 / A 276 304 / A 276 304L / A 276 316L
Seat Rings @ ASTM A 216 WCB / A 217 WC6 / A 217 WC9 / A 217 C5 / A 217 C12 / A 351 CF8 / A 351 CF8M / A 351 CF3 / A 351 CF3M / A 352 LCB
Back Seat Bushing ASTM A 276 410 / A 276 304 / A 276 304L / A 276 316L
Gland ASTM A 276 410 / A 276 304 / A 276 304L / A 276 316L
Gland Flange Carbon Steel / Stainless Steel
Stem Nut ASTM A 439 Gr.D2 / Al. Bronze
Lock Nut Carbon Steel / SS 304
Gland Packing Graphite Asbestos / Graphoil / PTFE
Bonnet Gasket Corrugated Soft Iron / Corrugated SS / Spiral Wound SS 304 with Asbestos or Graphoil / Octagonal Ring
Gland Eye – Bolt & Nut Carbon Steel / Stainless Steel
Cross Bolts & Nuts Carbon Steel / Stainless Steel
Hand Wheel Carbon Steel
Hand Wheel Nut Carbon Steel
Grease Nipple Carbon Steel
Grub Screw Carbon Steel
Studs / Bolts ASTM A 193 B7 / A 193 B7M / A 193 BBM / A 320 L7
Nut ASTM A 194 2H / A 194 8 / A 194 8M / A 194 4 / 7
* Valves are available in Duplex & Super Duplex Stainless Steel and Nickel Aluminium Bronze. Please indicate Trim required and ask for individual technical data sheets provided separately for these special materials.