New Britain Machine Company built injection molding presses for decades. Many remain in active production. Below are the four common contexts seen at the bench.
N110
Small-tonnage presses (100-200 ton)
Smaller New Britain presses. Vickers / Eaton proportional valves come off these for rebuild.
N120
Mid-tonnage presses (200-400 ton)
Mid-range presses. Mix of Vickers proportional and Continental Hydraulics valves come through routinely.
N130
Large-tonnage presses (400-750 ton)
Higher hydraulic flow machines. Moog servo valves and Continental Hydraulics proportional valves come off these for rebuild.
N140
Vickers KBDG / KFDG / KDG
Common valve types found across the New Britain product line. All come through the bench for rebuild.
Each unit is opened, inspected, and rebuilt at the component level. Failed parts come from inventory or off donor units. Bench verification before ship.
N210
Spool & sleeve service
Spool-to-bore clearance restoration on Vickers KBDG / KFDG / KDG bodies and Continental Hydraulics proportional valves.
N220
Coil rebuild
Solenoid coil rebuild on legacy Vickers and Continental bodies. Insulation breakdown is common after decades of service.
N230
Seal-pack replacement
Aged elastomeric seals harden and crack. Seal-pack replacement is standard scope on these rebuilds, using modern materials.
N240
Bench testing
Hagenbusch and older-style hydraulic stands. Hysteresis, null shift, and step response data available for purchase.
N250
Donor parts service
Aftermarket and donor parts for legacy Vickers and Continental bodies. Many are no longer in OEM stock.
N260
Repair scope
Bench-level component work on the valve hardware. PLC programming, machine parameter setup, and integration stay with the customer.
Worn spool edges and contaminated orifices on aged Vickers KBDG / KFDG / KDG bodies. Bench cleaning and lap restoration.
Internal leakage
Degraded proportional valve seals and worn metering edges cause cross-port leakage past the spool.
Slow valve response
Decades of operation create sluggish response from spool wear, contaminated pilots, and weakened return springs.
Coil & seal age
Solenoid coil insulation breakdown and hardened elastomeric seals after decades of service.
N500 Workflow
From part number to ship-back
Same four-step path through the shop whether the unit came off a small-tonnage New Britain or a 750-ton press.
N510
Get in touch
Call or email with the part number, machine context, and a photo of the nameplate if it helps.
N520
Bench review
Tech opens the unit, inspects spool and coil, and runs it on the hydraulic stand to confirm what failed.
N530
Cost & approval
We call back with the cost and a rough turnaround. Nothing is started without your sign-off.
N540
Repair, test, ship
Failed components replaced from inventory or off donors, the valve verified under pressure, and shipped back.
N600 Common questions
Common questions about New Britain valve repair
Application-specific questions. For brand-specific FAQs, see the dedicated brand page above.
What proportional valve brands come off New Britain machines?
New Britain presses run Vickers / Eaton proportional valves (KBDG, KFDG, KDG series) alongside Moog servo valves and Continental Hydraulics proportional valves. All come off the bench for rebuild.
Are OEM parts still available for New Britain machines?
No. The New Britain Machine Company ceased manufacturing decades ago. The valves themselves are commercial Vickers, Continental, and Moog bodies that NC Servo can rebuild from inventory and donor stock.
Can you repair Vickers KBDG / KFDG / KDG bodies?
Yes. Spool wear, seal degradation, and solenoid fatigue are inevitable on these legacy bodies. Spool, sleeve, coil, and seal-pack work all standard scope.
How long does a repair usually take?
Lead time varies job to job, partly because parts are often pulled from donor boards. Give us a call with the part number and the situation.
Do you provide New Britain machine programming or software configuration?
No. NC Servo handles bench-level component repair on the valve hardware only. PLC programming, machine parameter setup, and integration stay with the customer or OEM.
What if the valve is beyond economic repair?
If the valve is not fixable, we will let you know and help source a replacement.
What is the warranty?
One year on parts and workmanship for repairs and rebuilt units. Standard exclusions apply for contamination, improper installation, and out-of-spec operation.
N700 More from NC Servo
Related repair coverage
Other injection-molding pages and the brand pages most-tied to New Britain hydraulics.
Give us a call or send a part number with the machine context and the symptom. We'll check the donor pool, suggest a rebuilt match if we have one, and walk through repair or cross-brand options if we don't.
