15mm Flat Faced Isolating Valve Male Service Valve
This 15mm Flat Faced Isolating Valve is a premium water isolation valve designed for efficient flow control and shut-off in domestic and commercial plumbing systems. Manufactured from durable chrome plated brass, this flat faced isolating valve combines long-lasting performance, corrosion resistance and a professional finish.
15mm Flat Faced Isolating Valve Male Service Valve
This 15mm Flat Faced Isolating Valve is a premium water isolation valve designed for efficient flow control and shut-off in domestic and commercial plumbing systems. Manufactured from durable chrome plated brass, this flat faced isolating valve combines long-lasting performance, corrosion resistance and a professional finish.
Product Options
Quick Trade Summary: 15mm Flat Faced Isolating Valve
MEP Stock supplies heavy-duty forged brass 15mm flat-faced isolating service valves for connecting flexible tap connectors, washing machines, shower pumps, and boiler filling loops. Features a 15mm compression inlet, a machined flat-face male BSP outlet for captive rubber/fiber washers, and a quarter-turn screwdriver slot.
Flat-Faced Male Isolating Service Valves for Flexible Tap Tails & Pumps
Standard tapered or sharp-edged isolating valves frequently cut and ruin the internal rubber washers of flexible tap hoses. Our 15mm flat-faced service valves feature a precision wide machined sealing face that compresses flat washers uniformly, guaranteeing leak-free isolation for washbasins, monobloc taps, and kitchen appliances.
Engineering Specifications
| Body Material | Forged Brass CW617N with Nickel Plated Finish |
| Inlet Connection | 15mm Compression Nut & Brass Olive (BS EN 1254-2) |
| Outlet Connection | 1/2" BSP Male Flat Faced for Flexible Hoses |
| Actuation | Quarter-Turn Screwdriver Slot / Hex Key |
| Operating Pressure | Max 10 bar (PN10) |
| Operating Temperature | 0°C to +85°C (Potable Cold & Hot Water Services) |
| Sealing Face | Machined Flat Face for Captive EPDM / Fiber Washers |
BS EN Installation Protocol
- Step 1: Prepare 15mm Copper Inlet — Cut 15mm copper pipe square, deburr thoroughly, and slide compression nut and olive onto pipe.
- Step 2: Tighten Compression Inlet — Insert pipe fully into the valve socket and tighten nut 3/4 to 1 turn past hand-tight.
- Step 3: Inspect Flat Face — Verify the male flat face is clean and smooth. Never wrap PTFE tape on male parallel threads.
- Step 4: Fit Flexible Hose — Ensure rubber washer is correctly seated inside the female flexible hose nut.
- Step 5: Hand-Tighten & Nip — Screw flexible hose onto flat face hand-tight, then tighten gently 1/4 to 1/2 turn with a spanner.
Frequently Asked Questions
Why is a flat-faced isolating valve required for flexible tap connectors?
A flat face seals against the hose's internal washer without cutting into rubber.
A flat face seals against the hose's internal washer without cutting into rubber. Sharp-edged or coned valve ends slice into captive EPDM washers under spanner torque, leading to catastrophic hidden leaks inside vanity units.
Should I apply PTFE tape to the male threads of this flat-face valve?
No. Never apply PTFE tape or compound to parallel threads mating to a flat washer.
No. Never apply PTFE tape or compound to parallel threads mating to a flat washer. The water seal is achieved 100% by washer compression against the machined flat rim, not thread engagement.
How do I operate the isolation mechanism?
Use a flat-head screwdriver or coin to rotate the brass ball 90 degrees.
Use a flat-head screwdriver or coin to rotate the brass ball 90 degrees. Slot in line with pipe indicates OPEN; slot perpendicular across pipe indicates CLOSED.
Can this valve be installed on hot water feeds?
Yes, certified for both wholesome cold drinking water and hot water services up to 85°C.
Yes, certified for both wholesome cold drinking water and hot water services up to 85°C.
Is the handle directional?
No, bi-directional operation allows installation on either flow direction.
No, bi-directional operation allows installation on either flow direction.
What outlet thread sizes are available?
Stocked in standard 15mm x 1/2" Male BSP and 15mm x 3/4" Male BSP sizes.
Stocked in standard 15mm x 1/2" Male BSP and 15mm x 3/4" Male BSP sizes for commercial taps and washing machines.
Order Trade 15mm Flat Faced Isolating Valves Online
Single pieces and trade contractor boxes available with next-day dispatch.
Browse Full Valves & Controls Range →Quick Trade Summary: 15mm Flat Faced Isolating Valve
MEP Stock supplies heavy-duty forged brass 15mm flat-faced isolating service valves for connecting flexible tap connectors, washing machines, shower pumps, and boiler filling loops. Features a 15mm compression inlet, a machined flat-face male BSP outlet for captive rubber/fiber washers, and a quarter-turn screwdriver slot.
Flat-Faced Male Isolating Service Valves for Flexible Tap Tails & Pumps
Standard tapered or sharp-edged isolating valves frequently cut and ruin the internal rubber washers of flexible tap hoses. Our 15mm flat-faced service valves feature a precision wide machined sealing face that compresses flat washers uniformly, guaranteeing leak-free isolation for washbasins, monobloc taps, and kitchen appliances.
Engineering Specifications
| Body Material | Forged Brass CW617N with Nickel Plated Finish |
| Inlet Connection | 15mm Compression Nut & Brass Olive (BS EN 1254-2) |
| Outlet Connection | 1/2" BSP Male Flat Faced for Flexible Hoses |
| Actuation | Quarter-Turn Screwdriver Slot / Hex Key |
| Operating Pressure | Max 10 bar (PN10) |
| Operating Temperature | 0°C to +85°C (Potable Cold & Hot Water Services) |
| Sealing Face | Machined Flat Face for Captive EPDM / Fiber Washers |
BS EN Installation Protocol
- Step 1: Prepare 15mm Copper Inlet — Cut 15mm copper pipe square, deburr thoroughly, and slide compression nut and olive onto pipe.
- Step 2: Tighten Compression Inlet — Insert pipe fully into the valve socket and tighten nut 3/4 to 1 turn past hand-tight.
- Step 3: Inspect Flat Face — Verify the male flat face is clean and smooth. Never wrap PTFE tape on male parallel threads.
- Step 4: Fit Flexible Hose — Ensure rubber washer is correctly seated inside the female flexible hose nut.
- Step 5: Hand-Tighten & Nip — Screw flexible hose onto flat face hand-tight, then tighten gently 1/4 to 1/2 turn with a spanner.
Frequently Asked Questions
Why is a flat-faced isolating valve required for flexible tap connectors?
A flat face seals against the hose's internal washer without cutting into rubber.
A flat face seals against the hose's internal washer without cutting into rubber. Sharp-edged or coned valve ends slice into captive EPDM washers under spanner torque, leading to catastrophic hidden leaks inside vanity units.
Should I apply PTFE tape to the male threads of this flat-face valve?
No. Never apply PTFE tape or compound to parallel threads mating to a flat washer.
No. Never apply PTFE tape or compound to parallel threads mating to a flat washer. The water seal is achieved 100% by washer compression against the machined flat rim, not thread engagement.
How do I operate the isolation mechanism?
Use a flat-head screwdriver or coin to rotate the brass ball 90 degrees.
Use a flat-head screwdriver or coin to rotate the brass ball 90 degrees. Slot in line with pipe indicates OPEN; slot perpendicular across pipe indicates CLOSED.
Can this valve be installed on hot water feeds?
Yes, certified for both wholesome cold drinking water and hot water services up to 85°C.
Yes, certified for both wholesome cold drinking water and hot water services up to 85°C.
Is the handle directional?
No, bi-directional operation allows installation on either flow direction.
No, bi-directional operation allows installation on either flow direction.
What outlet thread sizes are available?
Stocked in standard 15mm x 1/2" Male BSP and 15mm x 3/4" Male BSP sizes.
Stocked in standard 15mm x 1/2" Male BSP and 15mm x 3/4" Male BSP sizes for commercial taps and washing machines.
Order Trade 15mm Flat Faced Isolating Valves Online
Single pieces and trade contractor boxes available with next-day dispatch.
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