ValvTechnologies Severe-Service Metal-Seated Valves

Zero-leakage metal-seated valves from ValvTechnologies (part of Valmet) for power, refining, mining, and nuclear service: V-Series, IsoTech PSG, TrunTech, NexTech, AbrasoTech, AbrasoBlock, ERV, and DFT check valves up to ASME Class 4500.

V-Series Metal-Seated Ball Valves (V1-1 to V1-4, V1-R)

V-Series integral-seat ball valves handle temperatures up to 815 °C and ASME/ANSI pressure classes 150–4500. Sub-series cover 1/4" to 36" bores across steam, feedwater, and refining lines. Replaceable parts include lapped balls, seats, stems, Grafoil rings, and Belleville springs.

Sizes 1/4"–36", ASME 150–4500
Rated up to 1500 °F (815 °C)
HVOF RiTech Cr3C2 / WC coatings
Grafoil + Belleville gland packing

IsoTech® Parallel Slide Gate Valves (PSG)

IsoTech parallel slide gate valves span 4"–36" in ASME 150–4500 for steam and feedwater up to 982 °C. Bodies use A216 WCB, WC9/C12A, CF8M, and duplex with 72 Rc chrome-carbide trim. Spares include discs, seats, 316 SS wire rings, Grafoil, and bonnet seals.

Sizes 4"–36", ASME 150–4500
WCB, WC9, C12A, CF8M, Duplex
Chrome-carbide trim up to 72 Rc
ASME B16.34 / III Class 1–3 / SIL

Trunnion Metal-Seated Ball Valves (TrunTech®, NexTech®)

TrunTech, NexTech R, NexTech E Series, and PulseJet trunnion valves cut torque in oil, gas, and high-cycle duty. Top and bottom trunnions and protected seat seals keep bi-directional shutoff in HIPPS and erosive lines. Spares cover seat seals, bearings, stems, and packing.

Top and bottom trunnion support
Lower torque, bi-directional seal
Upstream, midstream & HIPPS
Protected seat & stem packing

Delayed Coking Isolation & Multi-Port Switching Valves

Coking isolation and four-way switching valves route hot feed between coker drums A/B and the fractionator bypass. Integral seats handle thermal cycling while steam purging prevents coke buildup on the blowout-proof stem. Spares cover seats, stems, purge ports, and packing.

Coker drum A/B & bypass routing
Continuous steam purge ports
Integral shoulder blowout stem
Thermal-cycle integral seat

AbrasoTech® & AbrasoCheck® Slurry Valves

AbrasoTech ball valves and AbrasoCheck valves span 1/2"–36" in ANSI 150–2500 for mining tailings and abrasive slurries. Integral seats, wear liners, and HVOF RiTech coatings protect wetted parts from erosion. Spare kits include liners, coated balls, seats, and packing.

Sizes 1/2"–36", ANSI 150–2500
AbrasoTech ball & AbrasoCheck
HVOF RiTech coatings & liners
Replaceable liners, balls, seats

AbrasoBlock® HPAL & POx Autoclave Valves

AbrasoBlock autoclave and acid injection valves serve HPAL and POx hydrometallurgy circuits. Built from Titanium Grade 12, duplex stainless steel, and exotic alloys, they meet ASME II, PED, and API 6D Appendix C. Spares include alloy trim sets, stems, and seals.

Titanium Grade 12 & duplex alloys
HPAL & POx autoclave service
ASME II / PED / API 6D App. C
Alloy balls, seats, stems & seals

Electronic Relief Valves (ERV)

ERV packages (2-1/2"x4" and larger, up to Class 4500) provide ASME Section I V-stamp protection with 0.1% of 1 psi set accuracy. Assemblies pair a V-Series valve, actuator (air, spring, hydraulic, electric), pressure transducer, and DCS box. Spares include sensors and seals.

Sizes 2-1/2"x4"+, up to Class 4500
0.1% of 1 psi set-point accuracy
ASME Section I / III / SIL
V-Series valve, actuator & sensor

ValvTechnologies / DFT® Non-Slam & Nuclear Check Valves

Axial-flow DFT check valves (ALC, Excalibur, GLC, WLC, Y-Calibur, PDC) cover 1/4"–24" in ASME 150–2500. Opening at 0.5 psi differential pressure, they eliminate water hammer on steam, gas, and ASME III nuclear lines. Spare parts cover discs, seats, springs, and guides.

Sizes 1/4"–24", ASME 150–2500
ALC, Excalibur, GLC, WLC, PDC
0.5 psi cracking differential
ASME III / MSS SP-126 / SP-61

Severe-Service Portfolio of ValvTechnologies (ValvTechnologie)

ValvTechnologies (part of Valmet since July 1, 2026) engineers metal-seated, zero-leakage valves for fossil and nuclear power generation, delayed coking units, upstream and midstream oil and gas, mining slurries, and HPAL/POx hydrometallurgy.

Core product families span V-Series integral-seat ball valves (V1-1 to V1-4, V1-R), IsoTech parallel slide gate valves, TrunTech and NexTech trunnion ball valves, multi-port coking switch valves, AbrasoTech slurry valves, AbrasoBlock autoclave valves, ERV electronic relief packages, and ValvTechnologies / DFT non-slam check valves.

HVOF RiTech® Coatings, Alloys & Pressure Standards

Critical flow surfaces use proprietary HVOF RiTech chromium-carbide and tungsten-carbide hardcoatings (68–72 Rc) precision diamond-lapped with Inconel Belleville spring loading for tight shutoff under thermal shock up to 815 °C on V-Series and 982 °C on IsoTech.

Valves are built per ASME B16.34 in A105, A216 WCB, A182 F22/F91, A217 WC9/C12A, A351 CF8M, duplex steel, and Titanium Grade 12, with options meeting Nuclear ASME III Class 1/2/3, 10CFR50 Appendix B, PED, SIL, MSS SP-126-2000, and API 6D Appendix C.

Actuation, Stem Packing & Sizing Data

Engineered-to-order assemblies integrate live-loaded stuffing boxes (Grafoil center rings with 316 SS woven wire mesh anti-extrusion rings), graphite-composite pressure-seal bonnets, continuous steam purge ports for coker service, and air, spring, hydraulic, or electric actuators.

To prepare a technical specification or spare-parts quotation, provide the nameplate Serial/Tag number, series designation, bore size, ASME pressure class (150–4500), body alloy, and process medium parameters.

ValvTechnologies and model names are trademarks of their respective owners and are used only to identify the equipment for which we source parts. SpareX is not an official dealer, distributor or representative of ValvTechnologies and is not affiliated with the trademark owner. Origin, documents and warranty are stated for each item in the quotation.