Project Case Study · Tamil Nadu, India

Gunmetal Gate Valves — ISI Marked

Five ISI marked gunmetal gate valves (IS 778 / IS 318 Gr. LTB2) — screwed female BSP, hand-wheel operated, non-rising stem — sizes 25 mm to 100 mm for water and general service in Coimbatore.

Project snapshot

CoimbatorePlace of supply
5 sizes25–100 mm
IS 778ISI marked
Class 1Pressure rating
ISI marked gunmetal gate valves 25 to 100 mm
ISI marked gunmetal gate valve range — screwed female BSP ends.

Technical specifications

Source: final offer quotation, valve datasheet, and purchase order line descriptions.

ParameterSpecification
Valve typeGun metal gate (sluice) valve, hand-wheel operated
StandardISI marked, conforming to IS 778 (CM/L-9136171)
Gun metal gradeIS 318 Gr. LTB2
ConstructionScrewed-in bonnet, inside screw, non-rising stem, integral seats & back seat
End connectionScrewed female BSP (parallel)
Body / wedge / bonnet / glandGun metal, IS 318 Gr. LTB2
StemHigh tensile brass, IS 6912
Hand wheelCast iron, IS 210 Gr. FG 200
Gland packingPTFE / graphite (asbestos-free), IS 4687
Pressure rating (Class 1)Body 1.5 MPa (15 kg/cm²); Seat & back-seat 1.0 MPa (10 kg/cm²)
Body test pressure1.5 MPa hydraulic
Suitable forWater & oil / general service
CertificationISI marking; EN 10204 2.2 / 3.1 on request

Sizes supplied

SizeQtyDimensions (per IS 778) — End / L / H / W
1" (25 mm)11" BSP — L 70 · H 130 · W 66 mm
1-1/2" (40 mm)11-1/2" BSP — L 90 · H 162 · W 85 mm
2" (50 mm)12" BSP — L 100 · H 189 · W 92 mm
3" (80 mm)13" BSP — L 125 · H 262 · W 127 mm
4" (100 mm)14" BSP — L 160 · H 311 · W 188 mm

Bill of materials

PartMaterial
BodyGun metal — ISI marked
Wedge (disc)Gun metal — solid wedge
StemHigh tensile brass
Bonnet / stuffing box / gland / gland nutGun metal
Gland packingPTFE / graphite — asbestos-free
Hand wheelCast iron
Washer / screwMild steel

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