SMP Controls Systems Private Limited

sales@scspl-smp.com

High Performance Double Offset

Model KHP-W: Wafer type , Model KHP-L: Lug type & Model KHP-F: Flange type

Applications

Pharma, Military, Sour gas, Food Processing, Vacuum and Oxygen services, Steam services, Dead-end services, Fire, Chemical industry e.g. Chlorine-Ammonia etc., Reverse Osmosis, Slurry services, Modulating or Special fluids where Flow control is Important.

Suitable for on-off and control services

Range and Features

TYPE	DESIGN	PRESSURE	SEAT	FLANGE SUIT TO	2" TO 24"	28" TO 36"
Wafer	Eccentric-Double offset	ANSI Class 150-300	RTFE, PTFE, UHMWPE, Metal, Fire Safe	ANSI 150#,300#	Yes	Yes
Lug	Eccentric-Double offset	ANSI Class 150-300	RTFE, PTFE, UHMWPE, Metal, Fire Safe	ANSI 150#,300#	Yes	Yes
Flange	Eccentric-Double offset	ANSI Class 150-300	RTFE, PTFE, UHMWPE, Metal, Fire Safe	ANSI 150#,300#	Yes

Design, Manufacturing and Testing Standards – Technology at a Glance

DESCRIPTION
Tangent Wafer, Lug, and Flanged Double offset butterfly valves are engineered to ensure minimal seat wear, zero-leakage shutoff across the entire pressure range, and Uni-Bidirectional operation, providing extended service life with minimal maintenance. A major advantage of Tangent products is their international compatibility. The superior two-piece stem design and double offset disc/stem design enable high cycling and eliminate seat deformation when the disc is in the open position. Initially, the offset disc creates a cam action that pulls the disc away from the seat during opening. This action ensures maximum seat service life with reduced operating torques. The first offset positions the stems downstream of the seat center line, providing a 360-degree unobstructed sealing surface. The second offset places the stems off-center from the seat's vertical axis. As the valve closes, the camming action converts disc rotary motion into linear motion, effectively pressing the disc onto the seat. Mounting pads are integrally casted, facilitating direct mounting of gearbox and actuators on valves. The torque requirements of Tangent's High-performance double offset valves are significantly lower. The seat is completely isolated from contact with the line media, enhancing valve performance and extending service life. Serrations on the seat retainer ring and body secure the seat assembly in place regardless of disc position. The valve seals to zero-leakage in both directions, and the seat adjusts automatically to absorb wear and temperature changes. Seat replacement is easy without disturbing the disc or stem. The seat design ensures drop-tight sealing in both directions and is bi-directional across low to high-pressure ranges. The seat incorporates stainless steel wire winding with a U-shape envelope for extended seat life. The wire provides flexibility in both directions of flow. Fire-safe design options are available for Tangent's High-performance double offset valves in wafer, lug, and flange configurations. The fire-safe design combines superior performance and extended service life. During normal service, both soft and metal seats ensure zero-leakage in full-rated pressure and temperature conditions. In a fire scenario, the soft seat may partially or fully degrade due to heat, allowing the metal seat to maintain constant sealing. The fire-safe packing arrangement uses three rings of graphite for superior high-temperature sealing.

DESCRIPTION

Tangent Wafer, Lug, and Flanged Double offset butterfly valves are engineered to ensure minimal seat wear, zero-leakage shutoff across the entire pressure range, and Uni-Bidirectional operation, providing extended service life with minimal maintenance.
A major advantage of Tangent products is their international compatibility.

The superior two-piece stem design and double offset disc/stem design enable high cycling and eliminate seat deformation when the disc is in the open position. Initially, the offset disc creates a cam action that pulls the disc away from the seat during opening. This action ensures maximum seat service life with reduced operating torques. The first offset positions the stems downstream of the seat center line, providing a 360-degree unobstructed sealing surface. The second offset places the stems off-center from the seat's vertical axis. As the valve closes, the camming action converts disc rotary motion into linear motion, effectively pressing the disc onto the seat.

Mounting pads are integrally casted, facilitating direct mounting of gearbox and actuators on valves. The torque requirements of Tangent's High-performance double offset valves are significantly lower.

The seat is completely isolated from contact with the line media, enhancing valve performance and extending service life. Serrations on the seat retainer ring and body secure the seat assembly in place regardless of disc position. The valve seals to zero-leakage in both directions, and the seat adjusts automatically to absorb wear and temperature changes. Seat replacement is easy without disturbing the disc or stem.

The seat design ensures drop-tight sealing in both directions and is bi-directional across low to high-pressure ranges. The seat incorporates stainless steel wire winding with a U-shape envelope for extended seat life. The wire provides flexibility in both directions of flow.

Fire-safe design options are available for Tangent's High-performance double offset valves in wafer, lug, and flange configurations. The fire-safe design combines superior performance and extended service life. During normal service, both soft and metal seats ensure zero-leakage in full-rated pressure and temperature conditions. In a fire scenario, the soft seat may partially or fully degrade due to heat, allowing the metal seat to maintain constant sealing. The fire-safe packing arrangement uses three rings of graphite for superior high-temperature sealing.

Specifications:

Design standards as per EN 593 or API 609 (Category B) as standard, with other standards available on request.
Testing standards comply with API 598 and FCI 70-2.
Certification includes EN10204 Type 3.1 and manufacturing under ISO 9001:2015 Quality Management System.
Casting inspection follows MSS-SP-55 as standard, with other applicable standards available.
Valve trims available with combinations of casting materials like WCB, CF8, CF8M, CF3M, GR. 4A-5A, NAB, Aluminum Alloys, etc., and seat materials including RTEF, PTFE, UHMWPE, METAL, FIRE SAFE.
All valves are 100% factory tested (Hydro, Pneumatic) and inspected per standard protocols.

TECHNICAL DATA:

Model KHP W - Size: 2” (50 mm) to 36” (900 mm)

Model KHP L - Size: 2” (50 mm) to 36” (900 mm)

Model KHP F - Size: 2” (50 mm) to 36” (900 mm)

Features and Benefits :

Actuator/gearbox mounting flange is standardized according to ISO 5211.
Lugged body options are available with drilled and tapped (metric or imperial) configurations per ANSI 150# and 300# standards.
Features a two-piece shaft design to enhance disc efficiency and increase the Cv value.
Compatible with lever, gear, pneumatic, and electric actuators.
Valve shape is indicative only.
Q represents the disc chordal dimension at the valve face, ensuring disc clearance into the pipe or equipment.

General Notes

Tailored customization and automation to meet specific customer requirements.
Standard certificate of compliance issued to EN10204 Type 3.1.
Maintaining safety stock levels as per customer specifications.
Every valve undergoes comprehensive factory testing and inspection in accordance with industry standards.
Availability of various trims to suit unique customer needs.
Assisting customers with sourcing additional product requirements.
Consultation services with the factory for torque and other technical details.