Brass Isolating Valve
This Brass Isolating Valve is a professional-quality water isolation valve designed for quick and reliable control of water flow in plumbing systems. Manufactured from durable brass and supplied with olives in the nut ends, this brass isolation valve offers dependable performance, corrosion resistance and long-lasting durability.
Brass Isolating Valve
This Brass Isolating Valve is a professional-quality water isolation valve designed for quick and reliable control of water flow in plumbing systems. Manufactured from durable brass and supplied with olives in the nut ends, this brass isolation valve offers dependable performance, corrosion resistance and long-lasting durability.
Product Options
Quick Trade Summary: Brass Compression Isolating Valve
MEP Stock supplies heavy-duty forged brass compression isolating service valves for rapid local isolation of hot and cold water feeds to taps, toilet cisterns, washing machines, and showers. Features a smooth quarter-turn screwdriver slot ball mechanism and BS EN 1254-2 olive compression ends.
Dependable Local Fixture Isolation for Rapid Domestic Maintenance
Installing isolating service valves on every domestic fixture is a mandatory requirement under UK Water Regulations (Schedule 2). Our heavy forged brass isolating valves provide reliable quarter-turn shut-off, allowing sanitary appliances to be serviced, replaced, or repaired without draining down the whole building.
Engineering Specifications
| Body Material | Forged Brass CW617N (Natural Brass / Chrome Plated) |
| Connection Type | Double Compression Ends with Brass Olives (BS EN 1254-2) |
| Operating Mechanism | Quarter-Turn Screwdriver Slot Chrome Plated Ball |
| Internal Seals | PTFE Ball Seats & Dual EPDM Stem O-Rings |
| Operating Pressure | Max 10 bar (PN10 rated) |
| Operating Temperature | 0°C to +85°C (Potable Cold & Hot Water) |
| Standard Sizes | 15mm x 15mm and 22mm x 22mm Compression |
BS EN Installation Protocol
- Step 1: Select Location — Install on pipe runs immediately upstream of toilet cisterns, basins, or appliances.
- Step 2: Prepare Copper Ends — Cut copper pipe square, deburr thoroughly inside and out, and fit compression nuts and olives.
- Step 3: Insert Pipe into Valve — Push pipe firmly into both valve sockets until seated against internal shoulders.
- Step 4: Tighten Compression Nuts — Hand-tighten nuts, then tighten 3/4 to 1 full turn beyond hand-tight using holding spanner on valve body.
- Step 5: Verify Ball Position — Align screwdriver slot parallel with the pipe to open water flow; turn 90° across pipe to isolate.
Frequently Asked Questions
Why are isolating valves required under UK Water Regulations?
Water Regulations mandate isolating valves on all appliance feeds for localized servicing.
Water Regulations mandate isolating valves on all appliance feeds so sanitary fixtures can be safely maintained or replaced without cutting water supply to the rest of the dwelling.
How do I know if the isolating valve is open or closed?
Slot in line with the pipe is OPEN; slot perpendicular across the pipe is CLOSED.
Slot in line with the pipe indicates OPEN; slot perpendicular across the pipe indicates CLOSED.
Can I use an isolating valve on a central heating pipe?
Yes, rated up to 85°C, but lever ball valves are preferred on primary heating loops.
Yes, rated up to 85°C, though full-bore lever ball valves are preferred on primary central heating circuits to prevent flow restriction.
Can this valve be installed in any flow direction?
Yes, the ball mechanism is bi-directional and seals equally in both flow directions.
Yes, the ball mechanism is bi-directional and seals equally in both flow directions.
What should I do if an isolating valve slot is stiff to turn?
Use a wide-bladed screwdriver that fills the slot completely to prevent camming out.
Use a wide-bladed screwdriver that fills the slot completely to prevent damaging the brass slot. Gently work the ball back and forth to loosen mineral deposits.
What sizes are available?
Available in standard 15mm and 22mm compression sizes in single units and contractor boxes.
Available in standard 15mm and 22mm compression sizes in single units and contractor boxes of 10 and 20.
Order Trade Brass Isolating Valves Online
Stock up on essential 15mm and 22mm service valves with trade contractor discounts.
Browse Full Valves & Controls Range →Quick Trade Summary: Brass Compression Isolating Valve
MEP Stock supplies heavy-duty forged brass compression isolating service valves for rapid local isolation of hot and cold water feeds to taps, toilet cisterns, washing machines, and showers. Features a smooth quarter-turn screwdriver slot ball mechanism and BS EN 1254-2 olive compression ends.
Dependable Local Fixture Isolation for Rapid Domestic Maintenance
Installing isolating service valves on every domestic fixture is a mandatory requirement under UK Water Regulations (Schedule 2). Our heavy forged brass isolating valves provide reliable quarter-turn shut-off, allowing sanitary appliances to be serviced, replaced, or repaired without draining down the whole building.
Engineering Specifications
| Body Material | Forged Brass CW617N (Natural Brass / Chrome Plated) |
| Connection Type | Double Compression Ends with Brass Olives (BS EN 1254-2) |
| Operating Mechanism | Quarter-Turn Screwdriver Slot Chrome Plated Ball |
| Internal Seals | PTFE Ball Seats & Dual EPDM Stem O-Rings |
| Operating Pressure | Max 10 bar (PN10 rated) |
| Operating Temperature | 0°C to +85°C (Potable Cold & Hot Water) |
| Standard Sizes | 15mm x 15mm and 22mm x 22mm Compression |
BS EN Installation Protocol
- Step 1: Select Location — Install on pipe runs immediately upstream of toilet cisterns, basins, or appliances.
- Step 2: Prepare Copper Ends — Cut copper pipe square, deburr thoroughly inside and out, and fit compression nuts and olives.
- Step 3: Insert Pipe into Valve — Push pipe firmly into both valve sockets until seated against internal shoulders.
- Step 4: Tighten Compression Nuts — Hand-tighten nuts, then tighten 3/4 to 1 full turn beyond hand-tight using holding spanner on valve body.
- Step 5: Verify Ball Position — Align screwdriver slot parallel with the pipe to open water flow; turn 90° across pipe to isolate.
Frequently Asked Questions
Why are isolating valves required under UK Water Regulations?
Water Regulations mandate isolating valves on all appliance feeds for localized servicing.
Water Regulations mandate isolating valves on all appliance feeds so sanitary fixtures can be safely maintained or replaced without cutting water supply to the rest of the dwelling.
How do I know if the isolating valve is open or closed?
Slot in line with the pipe is OPEN; slot perpendicular across the pipe is CLOSED.
Slot in line with the pipe indicates OPEN; slot perpendicular across the pipe indicates CLOSED.
Can I use an isolating valve on a central heating pipe?
Yes, rated up to 85°C, but lever ball valves are preferred on primary heating loops.
Yes, rated up to 85°C, though full-bore lever ball valves are preferred on primary central heating circuits to prevent flow restriction.
Can this valve be installed in any flow direction?
Yes, the ball mechanism is bi-directional and seals equally in both flow directions.
Yes, the ball mechanism is bi-directional and seals equally in both flow directions.
What should I do if an isolating valve slot is stiff to turn?
Use a wide-bladed screwdriver that fills the slot completely to prevent camming out.
Use a wide-bladed screwdriver that fills the slot completely to prevent damaging the brass slot. Gently work the ball back and forth to loosen mineral deposits.
What sizes are available?
Available in standard 15mm and 22mm compression sizes in single units and contractor boxes.
Available in standard 15mm and 22mm compression sizes in single units and contractor boxes of 10 and 20.
Order Trade Brass Isolating Valves Online
Stock up on essential 15mm and 22mm service valves with trade contractor discounts.
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