Home › Products › High pressure valves
Six lines, to 690 bar.
Ball, check and needle valves for hydraulic duty, from 1/8" to 8" in SS316 and carbon steel. Threaded, compression, SAE flange and ISO 6164 connections. Specified on size, material, working pressure and connection — all four are on every card below.
The six lines we stock
Size, material, working pressure and connection on every card. Ratings are the top of each range and fall as the bore grows — tell us the size and we will confirm the figure.
Isolate · highest rated line here
High pressure ball valves
Size1/8"–2" Pressureto 500 bar MaterialSS316 · carbon steel EndsFemale threaded BSPP or NPT · compression Ready stock→
Isolate · bolts to an SAE port
SAE flange end ball valves
Size1/2"–3" Body PN315 · 350 · 420 bar MaterialSS316 · carbon steel EndsSAE flange end Ready stock→
Isolate · widest bore here
ISO 6164 ball valves
Size1/2"–8" Pressureto 400 bar MaterialStainless 442A / 4428 · steel 212A / 282A EndsISO 6164 flange Ready stock→
Non-return · no handle
High pressure check valves
Size1/8"–2" Pressureto 500 bar MaterialSS316 · carbon steel EndsFemale threaded BSPP, NPT or SAE UNF Ready stock→
Non-return · Code 61 and 62
SAE flange check valves
Size1/2"–2" Pressure210 bar · 420 bar MaterialSS316 · carbon steel EndsSAE flange Code 61 · Code 62 Ready stock→
Throttle · fine flow control
Needle valves
Size1/8"–2" Pressure350 to 690 bar MaterialSS316 · carbon steel EndsFemale BSPP, NPT, SAE UNF or tube Ready stock→Two of these have no handle, and that is the point. A check valve decides on flow, not on an operator — fit one where reverse flow would drive a load backwards or push contamination upstream. If you need to hold a load rather than merely stop backflow, say so: that is a different duty and we will quote for it.
Getting the specification right
Which line suits the duty, and the four things we need in order to quote it.
Start with the connection
- Threaded or compression port — ball valves and check valves, both to 700 bar, from 1/8" to 4".
- SAE port on the equipment — SAE flange end ball valves or SAE flange check valves, at 210 or 420 bar. Code 62 is the higher‑pressure pattern.
- Large bore — ISO 6164 ball valves reach 8" at 250 or 400 bar, which is well beyond where the threaded lines stop.
- Setting a flow rather than opening or closing — needle valves. Ours run to 10,000 PSI from HSME, 6,000 PSI on the RFS line, and 350 bar from MHA Zentgraf.
A ball valve held part‑open will wear its seat. If the duty is throttling, use a needle valve.
What to send us
Four things and we can quote without going back and forth:
- Working pressure of the circuit — this is what narrows the list fastest.
- Size and port — BSPP, NPT, compression, SAE Code 61/62 or ISO 6164.
- Function — isolate, stop backflow, or throttle.
- Medium and temperature — this is what decides SS316 against carbon steel.
Replacing a valve? The part number on the body or a photo of it is usually enough on its own.
Catalogues
Thirteen high pressure valve catalogues, grouped by manufacturer. Direct PDF downloads — no form, no email address.
MHA Zentgraf9 catalogues
MHA BKH High Pressure Ball ValvesPDF
MHA MKH High Pressure Ball ValvesPDF
MHA High Pressure Check ValvesPDF
MHA Needle Valves Steel 350 BarPDF
MHA ISO 6164 Ball ValvesPDF
MHA BKH SAE Flange End Ball ValvesPDF
MHA KH SAE Flange End Ball ValvesPDF
MHA MKH SAE Flange End Ball ValvesPDF
MHA SAE Flange Check ValvesPDF
RFS2 catalogues
HSME1 catalogue
Inteva1 catalogue
What is in them
- Dimensions — port size, hex, overall length and weight, per part number.
- Ratings — working pressure by size, in bar and PSI.
- Materials and seals — body, ball or needle, stem and seal material for each variant.
- Port options — BSPP, NPT, compression, SAE Code 61 and 62, and ISO 6164 flange patterns.
Before you download
- They open in a new tab. Nothing is gated: no form, no sign‑up, no email address.
- Dimensions and ratings are in the catalogue; stock and price are not. Send us the duty and we will confirm both.
- The lines overlap on purpose — needle valves come from three of these makers at 350 bar, 6,000 PSI and 10,000 PSI. Tell us the pressure and we will tell you which is genuinely enough.
Send the working pressure, the size and the ports.
One valve or a full bill of materials — priced by a product specialist within two working hours.