M Barnwell Services are the largest independent manufacturer, stockist and distributor of O Rings and Back-Up Rings in the UK. With 50 million in stock, we supply to over 5000 customers globally every month – quickly and reliably. We have an extensive range of seal materials including Perfluoroelas

Molded products include: O-rings Rubber grommets Rubber gaskets Rubber seals Over-molded parts with metal Bellows Spacers Connectors EMI/RFI shielding Nuclear radiation shielding (non-lead) Tubes and wraps Molded sponge sheets Special barrier coatings

A large trunnion design ensures central positioning under the highest working pressure. Independent floating spring loaded seats provide a tight seal even at low differential pressures. Service and maintenance is simplified with a bolted body design incorporating double o-rings or a combination of o

Full Bore (Full Port) Pressure: Class 300 Temperature: Down to -196°C Cavity Relief Hole Investment casting body and cap Long neck design Blow-out proof stem Viton O-Ring on stem Anti-static design Locking device design Direct mounting pad ISO 5211

Full Bore (Full Port) Pressure: Class 150, DIN PN16, DIN PN40 Temperature: Down to -196°C Cavity Relief Hole Investment casting body and cap Long neck design Blow-out proof stem Viton O-Ring on stem Anti-static design Locking device design Direct mounting pad ISO 5211

PN16 reinforced body in CW617N brass, manufactured in accordance with UNE 12165. PTFE seats and certified O-rings (KTW and Kiwa). Actuated by an ergonomic carbon steel handle coated with high performance anticorrosion black layer. Designed and tested according to standard UNE EN ISO 21003 standards.

Ball valve with press fitting for multilayer pipes and red stainless steel handle. Reinforced body made of CW617N brass, in accordance with UNE EN 12165, PTFE shaft and seat packing and certified O-rings (KTW and Kiwa). Model 4064 has a stainless steel handle to open and close the valve with less ef

Ball valve with press fitting for multilayer pipes and red stainless steel handle. Reinforced body made of CW617N brass, in accordance with UNE EN 12165, PTFE shaft and seat packing and certified O-rings (KTW and Kiwa). Model 4064 has a stainless steel handle to open and close the valve with less ef

Ball valve series HFKH650 for hydrogen transport, storage and refueling systems up to 650 bar Higher compression of hydrogen during transport and storage improves the efficiency of the systems, saves installation space and, last but not least, reduces costs. Considering the temperature influence, St

Ball valve series HFKH1000 for hydrogen refueling at pressures up to 1034 bar At 700 bar refueling of passenger cars, hydrogen is compressed and stored at pressures up to 1034 bar. Latest developments reveal a tendency to 700 bar technology also for commercial vehicles such as trucks and busses. IS

Ball valve series HFKH500 for hydrogen transport, storage and refueling systems up to 500 bar Gas transport and refueling applications set higher requirements for ball valves. At 350 bar refueling, system pressures Gas transport and refueling applications set higher requirements for ball valves. At

Complete drainage after full cut - off the flow. Stainless steel stem with rolled thread. O-ring stem sealing, packing cork protected against medium. Forged packing cork protected against unscrewing, EPDM fully vulcanized valve plug. UV resistant epoxy coating minimum 250 microns according to EN ISO

Body & end caps quality investment casting Regulation (EC) No. 1935/2004; (EU) 10/2011 Tri-Clamp/ Tube/ Ex-Tube/ SMS 3008/ DIN 32676 (T-Clamp) FDA certified O-ring and sealing kits High purity with 0.51~0.64 um (20-25 u-in or 180G/ #180) flow port polish with ISO 5211 direct mounting pad High perfor

Body & end caps quality investment casting T-Clamp, tube weld, SMS 3008 ends High purity with 0.51~0.64 um (20-25 u-in or 180G/ #180) flow port polish FDA certified O-ring and sealing kits with ISO 5211 direct mounting pad up to 4” High performance adjustable stem packing Blow-out proof stem d

Pressure Ranges 40 psig to 100 psig 3 bar to 8 bar Temperature Ranges – Std.(NBR O-rings) : 20°C~80°C (-4°F~176°F) – Lower Temp. (Silicone O-rings) : 40°C~80°C (40°F~176°F) – High Temp. (Viton O-rings) : 15°C~150°C (+5°F~300°F) – Note : Special grease is required for low and high temperature service

HTD FEATURE Pressure Ranges 40 psig to 100 psig 3 bar to 8 bar Temperature Ranges – Std.(NBR O-rings) : 20°C~80°C (-4°F~176°F) – Lower Temp. (Silicone O-rings) : 40°C~80°C (40°F~176°F) – High Temp. (Viton O-rings) : 15°C~150°C (+5°F~300°F) – Note : Special grease is required for low and high tempe

The 37° flare flange connection is based on flaring the pipe ends to 37° and utilizing flare flanges and cone inserts. There are two cone inserts per union connection. One cone insert has an “O-Ring Face” and the other has a “Flat Face”. Mating these cone inserts and drawing the flanges together for

DSB valves are crucial for safe and efficient hydrogen applications, particularly at hydrogen refueling stations. They reliably isolate pressure systems and safely release residual pressure to minimize potential hazards. With two block valves, they prevent uncontrolled hydrogen leakage while allowin

Chrome-plated Ball Virgin PTFE Seats O-ring Packing Blow-Out Proof Stem AB1953, NSF/ANSI/CAN 372 & 14 Certified 10-year Warranty IAPMO/ANSI Z1157

Chrome-plated Ball Virgin PTFE Seats O-ring Packing Blow-Out Proof Stem AB1953, NSF/ANSI/CAN 372 & 14 Certified 10-year Warranty IAPMO/ANSI Z1157

F1960 Full Port Virgin PTFE Seats Double NBR O-ring Packing Blow-Out Proof Stem For Use with PEX Tubing CSA B125.3 ASTM-F1960 AB1953, NSF/ANSI/CAN 61 & 372

F1960 Full Port Virgin PTFE Seats Double NBR O-ring Packing Blow-Out Proof Stem For Use with PEX Tubing CSA B125.3 ASTM-F1960 AB1953, NSF/ANSI/CAN 61 & 372

F1807 Full Port Virgin PTFE Seats Double NBR O-ring Packing Blow-Out Proof Stem For Use with PEX Tubing CSA B125.3 ASTM-F1807 AB1953, NSF/ANSI/CAN 61-G & 372 Certified 5009AB = Base design 5009ABF = with Mounting Foot 5009ABDF = with Drain port & Mounting Foot 5009ABW = with Wing handle

F1807 Full Port Virgin PTFE Seats Double NBR O-ring Packing Blow-Out Proof Stem For Use with PEX Tubing CSA B125.3 ASTM-F1807 AB1953, NSF/ANSI/CAN 61 & 372 Certified 5007ABW =With Wing handle